Biden didn’t win legitimately. He had the media and technology companies censor negative stories for him.
He got more votes, that's all that matters.
If you disqualified every president that won because of some backroom shenanigans you'd have no presidents left.
Hey, I know for a fact that Biden was especially dirty!
After all, he had the Russians interfering in the elections to falsely promote biden!
For example:
https://en.wikipedia.org/wiki/Russian_interference_in_the_2020_United_States_electionsIn February and August 2020, United States Intelligence Community (USIC) experts warned members of Congress that Russia was interfering in the 2020 presidential election in then-President Donald Trump's favor.Nope, wait a second, that was Trump and the republicans they were helping out.
But Biden did violate the Hatch act!
See:
https://www.pbs.org/newshour/politics/probe-finds-trump-officials-repeatedly-violated-hatch-actAt least 13 former Trump administration officials violated the law by intermingling campaigning with their official government duties... The report from the Office of Special Counsel says the officials broke the law without consequence and with the administration’s approval as part of a “willful disregard for the Hatch Act,” which prohibits government officials from using their official roles to influence elections...Oh, wait a second, that was Trump again.
Actually, the whole "Media censoring anti-Biden stories" that the MAGAchud like to drum up is a myth... basically it was media companies learning a lesson from the 2016 election by simply being more careful about spreading misinformation generated by the Russians.
Putin (through Russian hackers): "Biden is secretly a vampire who feasts on the blood of children, turning them gay!"
Media Companies: "Ok, that's dumb. Maybe we won't be so gullible as we were last election and not spread such nonsense"
MAGAchud: "Censorship!"