Listen, kids, don't let transphobia seep into your ideology just because it's being sold to you as activism! Here's a little list to protect you from adopting transphobic beliefs:
-- There is never a good reason to mock someone's gender identity and/or pronouns! Criticize people on their actions, not their identity.
-- "Transfeminism" encapsulates the issues of all trans people, as studied through a feminist lens. There is no way to exclude a whole group of trans people from transfeminism without being transphobic. Anyone who tells you transfeminism is exclusive to one type of trans person is lying to you and possibly themselves.
-- Trans people speaking about their bodies and how those bodies are affected under a patriarchal system are never misgendering themselves.
-- Body parts =/= gender! That's bioessentialism and will always be transphobic and intersexist.
-- No gender identity can be reduced down to one stereotype or one personality type. That's gender essentialism, which will never not be transphobic (and misogynistic, while we're at it).
-- Don't take people who weaponize transphobia against people they don't like as authorities on transfeminism. There is no amount of bad behavior that deserves to be met with transphobia.