i still really don’t give a shit

Ok, don't respond.

i’m not going to engage just because you tell me too

Ok, don't respond.

repeatedly telling me i should engage on “burning books is bad” is the transphobic part.

Topics in life are nuanced and intersect. Burning one book with the reasoning that it's fighting transphobia does not nullify the other things that book burning represents. If book burning being bad is transphobic, then fascists are trans-positive. Clearly, that's not how the world works. An action is not defined solely by intent, but also by how it is received by others. You do not get to define how your messages are received, and part of human socialization is navigating how others feel about what you do. Communication is a two-way street, but you're demanding that only your way matters.

i don’t need to explain myself or my actions.

Ok, don't respond.

i don’t need to justify them to you or anyone else.

Ok, don't respond.

now please, could you leave me the fuck alone?

You could have exited the conversation by not responding.