"Is a lesbian transphobic if she does not want to have sex with trans women?"

Yes.

Let me explain why.

I just learned this myself a few months ago. I went to a trusted friend who helped me work out why this is problematic when I couldn't see it for myself.#CisWithTheT https://t.co/sMqNF2HROG

— Christine Cavalier (@PurpleCar) October 27, 2021

You're literally defending the position that homosexuality is immoral.

Your initial instinct was correct and moral. Tell your cult leader to take a hike.

— Colin Wright (@SwipeWright) October 28, 2021