This isn't about you. This is about their taking control of how others sexualize them.
By making this about your reactions and telling them to change (even jokingly) you are being part of the problem.
If it's about them taking control of how others act, isn't it about others?
When it is put as "sexualization" it indeed becomes about him (and supposedly all men). Some conservatives say exactly the same about going out with clothes that are also "sexualized". We as a society currently somehow incentive people to go out almost naked, but some wants to fight back the sexualization of short clothes putting the blame on the same people saying that wear minimal clothes are not a form of protest and brings bad outcome.