Sorry but maybe they should complain and help to weed out creeps instead of discriminating against the entirety of a group based on the actions a few.
Easy for you to say. That's a course of action that can get you branded as a TERF, get you doxxed and threatened, even get people contacting your employer to demand you be fired. Given a choice between that vs just not going back there again, most sane people will just not go back.
And if a customer does complain, what's a business supposed to do? Post #1 in this thread talks about a business that tried to respond to concerns from female customers about pen1s-people naked in their spaces, and look at the trouble they got into as a result.
The purpose of a witch-hunt isn't to burn one witch, it's to scare everyone else into compliance. That goes for both women who'd complain about shlongs in their showers, and businesses considering how to respond to those complaints.
Finally, it's extremely telling to me that there's like a handful of examples you're able to come back with over and over again (Yaniv and the possibly apocryphal yoga hard on) and rather than take that as an indication that maybe these are a few isolated incidents perpetrated by creeps (which come in all shapes sizes and genders) you seem to think it's an indication that transpeople are somehow predisposed to being creeps. It's such an obvious echo of gay panics in the past that it's impossible to take seriously and obscures any actual legitimate concerns you may have.
No serious person is claiming that all trans people are creeps and predators. People are saying that on-demand gender self-ID is an idea tailor-made to be exploited by creeps and predators.
-k