I think that the "people who menstruate" and "tampons in men's washrooms" activism has inadvertently misled cis people into believing trans men have periods on T?

Tampons should be in men's washrooms not for the sake of trans men but because cis people often use the opposite washroom in an emergency, especially cis women on their periods. Most people using tampons in men's rooms are cis women. The rhetoric around it, however, may be feeding a misconception that trans men experience periods in the same way that cis women do, when most don't have periods at all. You actually have to clarify to cis women that you haven't had your period in 7 years or something.

It seems that trans women's periods are more common knowledge than trans men's lack of periods.