My mom lied to me about believing I’m trans and has been telling everyone I’m non binary and not a boy

So today I went through the family group chat on my moms phone trying to find a photo of me and my cousins for a school project and I came across a text of her explaining to the family that I'm trans and at first I was happy because my mom is very supportive or so I thought the text said "Zack asked us awhile ago to refer to him as a boy but recently he has been wearing a lot of pink t shirts with his jeans instead of how he used to wear only black and his hair is a little longer than when he first cut it short so we can just all refer to him as something in between girl and boy but when your in front of him just call him a boy so he doesn't get mad. Honestly parenting a teenage girl is hard." For some background the long hair they were referring too was literally a slightly grown out buzz cut and the pink shirts were hello kitty shirts because it's my special interest. Like what the hell you guys have supported me through everything while thinking that. So yeah I'm gonna cut my whole family off the second I move out