About that confrontation with the MTF in the old guy's store...
It really makes you wonder why MTFs don't just accept the fact that trans women are not, and will never be, women. It would save them so much energy to just accept that fact and not keep fighting people on it. Trans people would get less pushback as well if they weren't trying to force people to ignore basic biological facts.
I get that some of them say it makes them dysphoric, but at a certain point, they need to understand the limitations of the power they hold over other people. If dressing like the opposite sex relieves some of their dysphoria, then they can do that. But when they start forcing people to repeat their mantra that trans women are women, it goes from managing dysphoria to confirming their delusion, and in the end, the trans person will be harmed because you are just reinforcing their pipe dream.