Actually 2 lesbians I know are dating transwomen and I do not believe that it makes them any less lesbians.
Of course it does. It makes them heterosexual or bisexual. You can't just change words.
You are clearly on the way to being part of the problem, not the solution.
I have absolutely zero problem with women who sleep with both women and transwomen, but that doesn't make them lesbians.
And being a lesbian does not give anyone the right to redefine the meaning of words.
Sexual orientation is a protected characteristic under equality law. Homosexuality is defined as same sex attraction.
Not same gender attraction.
Lesbians are very definitely being told, as you have so amply demonstrated, that being a lesbian does not give them the right to refuse, en masse, people with penises.
You might very well feel confident enough to refuse sexual pressure. Many, many women do not.
But what really annoys me about this is everyone is very quick to say, oh no, you don't have to sleep with anyone, whilst maintaining that you can't refuse a biological man purely on the basis that you're a lesbian.
And that Is what this demonstration was about.