One problem is that if you're not on the extremes, why do you need a new p2p chat app? If I have mainstream opinions then mainstream apps probably work just fine.
There's plenty of reasons to avoid the "mainstream" apps that have nothing to do with your political views. Decentralization, control over your own data, lack of intrusive advertising, informational hygiene, and privacy are good enough reasons by themselves.
One say you might say something controversial which was mainstream the day before. Fast times we're living in.
Not being supportive of blatant censorship is a pretty good reason for normal people