no - the U.S. Navy won't be moving on to, as you say, "something else".
Yet history shows otherwise... as I pointed out, in the same time that Canada has had our CF18s, the U.S. navy has gone through THREE DIFFERENT JETS! (And, in case you didn't know, the F18E/F super hornet is actually a brand new plane, quite different than the original hornet, with little commonality between it and the original F18A that they started with. And unlike Canada, they have actually made a decision to purchase.
Not sure why you think things will somehow be different in the future. Do you think there is some sort of magic wand that the U.S. navy can wave that will automatically make the F-18E/F last longer, when in the past their window of usage has been much shorter than Canada's CF-18?
Notwithstanding existing Super Hornets (Navy) often are land-based for extended periods of time, all you need to do is recognize the severe limitations of the F-35 are driving....
Most of those 'limitations' are things where fixes are expected to be implemented shortly.
And even with those 'limitations', the F35 can still outperform the F18 in many ways.
...just how the U.S. Navy plans to deploy the F-35/Super Hornet mix: as in not rely upon the F-35 for any actual combat aspect; rather to use the F-35 to penetrate enemy air defenses and network sensor data back to actual combat aircraft... like the Super Hornet
Exactly wrong.
The F-35 is capable of carrying out all the missions that will be required of it.
Now, admittedly there are still problems that have to be dealt with, and progress the F-35C has been slower than on the F-35A/B. But even now, if you're a pilot in combat you'd still be better off in an F-35 than an F-18.
Kind of in line with Gen. Michael Hostage, head of air combat command in the U.S., going a tad rogue here: Canada's multi-billion dollar F-35s ‘irrelevant’ without U.S.-only F-22 as support, American general says
Ah yes, that old comment.
I rather suspect the general's comments have been taken out of context and warped to the point where they bear little resemblance to his actual meaning.
The F-22 Raptor is probably the best plane ever for air-to-air combat (due to its stealth, vectored thrust, super-cruise, avionics.) In a combat situation you would want the F22s to handle air-based threat.
The F-35 is a multi-role fighter. It CAN defend itself from other aircraft should the need arise (and can do so just as well, if not better than the Super Hornet or Gripen). But the F-22 is still better in that role. That does not mean the solution is to scrap the F35 in favor of the Super Hornet or Gripen, since those planes would be even worse off.
The reason the general said that the F-35 'needs' the F-22 is because the F-35 is the plane that the American airforce was buying (and the air force always likes to have multiple planes with slightly different roles, like the F15/F16 split from decades past.) If they decided to scrap the F-35 and buy all super hornets or Gripens, he would have said pretty much the same thing... those planes 'need' the F-22.
So, why don't we look at what some pilots actually think of the plane?
From:
https://www.airspacemag.com/military-aviation/f-35-faces-most-critical-test-180971734/A retired Marine Corps pilot who flew both the F35 and raptor...
Fighter aircraft all have to have a level of performance and maneuverability: speed, Gs, turn rate, turn radius, acceleration, climb—all of those things. In the F-35, there’s not a massive change in those performance metrics.
The F-35 is better [than legacy aircraft], but not a lot better... ask 100 pilots to rank which is the most important, I guarantee you that 100 out of 100 pilots would say “situational awareness.”...
In situational awareness, the F-35 is superior to all platforms, including the Raptor.
So, by his measure, he thinks its slightly better than 4th generation fighters (i.e. better than planes like the Super Hornet) in things like maneuverability, and WAY better than them in terms of situational awareness.
Or how about this:
https://breakingdefense.com/2017/06/pilots-say-f-35-superior-within-visual-range-dogfight-criticisms-laid-to-rest/I asked one of the Air Force pilots, Lt. Col. Scott “Cap” Gunn, here whether the F-35 would win when fighting close-up with an enemy fighter. His answer was simple: “Without a doubt.”(He had pitted the F-35 against the F-16 multiple times... once he got experienced in the F-35, he easily outflew the F-16.)
Or there is this one:
https://www.defensenews.com/air/2016/03/01/norwegian-f-35-pilot-counters-controversial-dogfighting-report/"So how does the F-35 behave in a dogfight? ... To sum it up, my experience so far is that the F-35 makes it easier for me to maintain the offensive role, and it provides me more opportunities to effectively employ weapons at my opponent."It should also be pointed out that the F-35 managed a 20-1 kill ratio at a recent 'red flag' training exercise. (Granted, that was a situation where it was an integrated battle featuring a variety of jets; however, it still managed to hold its own.)
https://theaviationist.com/2019/02/16/the-first-reports-of-how-the-f-35-strutted-its-stuff-in-dogfights-against-aggressors-at-red-flag-are-starting-to-emerge/apparently, this kind of reveal only aided certain wags in labeling the F-35 a, "bomb-truck"!
Those 'certain wags' are trying argument-by-meme.
Compared to the F-22, the F-18 would also be classified as a 'bomb truck'.