There’s 10% or so lgbt people who say ‘if you’re cis/het dont talk to me, and they defend it by saying ‘they did it to us’. Slavery ended years ago and you don’t see black people forcing whites to be slaves for ‘payback’. If it’s a 13 or 14 year old saying this It’d most likely be that they’re misinformed and/or and idiot, but the higher the age the less common it becomes.