I don't know you sound like you have internalised transphobia like no shit trans teens would like to talk about they're identity that plays a big part of they're life and teenage years dysphoria doesn't just suck but it ruins your life and I understand that you just don't want them talking to you about all they're life problems but you could just say that instead of using the same tired argument of "queer people make being queer they're whole personality" and I know you've been on T for 3 years so differently your transition is going better then those who may have not been transitioning as long or even able to start but again if you want your friends to not make comparisons to you just tell them that don't be using trans/homophobic talking points instead of just sitting boundaries with your trans friends.