Of course you can have encrypted group chats on Signal, if you’re not concerned about meta data. Or xmpp group chats with encryption if you want decentralization. You can keep your secret stuff secret and your public stuff public simply by using different apps.

Your logic lesson for today:
The genetic fallacy is the act of rejecting or accepting an argument on the basis of its origin rather than its content. Under the genetic fallacy, we judge a claim by paying too much attention to its source or history, even though this criticism is irrelevant to the truth of the claim.
If you understand the genetic fallacy you should realize that calling the originator of the argument a name is insufficient to refute the argument.

We have no problem with trans people exiting.