AIO: for going no contact with my brother who called me delusional for my transness ?

The important part of the texts are in English, just ignore the french part. My little brother is very religious and tends to speak about it every time he can. I don’t have a problem with him believing, but when we discuss things like politics, religion and LGBTQ+ issues, it’s always going downhill. We made a deal to not talk about these things and yet, this morning he sent me a video of Frank Turek, a christian apologist. Am I overreacting here by cutting, for now, ties with him ?