Shame on discord for having a lousy privacy stance, but most people aren't on signal for the privacy, most people are on signal because that's where their friends are (and one or two of those friends is there for the privacy).
It's interesting how opensource Zulip[1] hasn't been able to garner as much of a following or usage amongst the gamer crowd compared to Discord.
Zulip does not have first-party voice chat. You would be more likely to get gamers to switch to a Teamspeak server.
it's not like people have to "don't give in" all the time...
Until you find that you expected security and privacy and the developer/corporation/investors say, "too bad for you".
This is the warning of Niemöller's famous paraprosdokian.
I can make the decision to use Signal or whatever, but as long as my whole social circle does not do the same, it wont be useful. And since when they do the swap, they have to convince their whole social circle to do the same, this becomes an impossible task. Either you have 10 different apps for different friends that lie on different places on the ethics of privacy, or you just take the easy way out and use what everyone uses.
Not everything is a web app, and it's trivial these days to obtain certificates, even without a proxy (certbot, etc.).
Of course I understand that if you host a lot of web apps, having all web requests routed through a universal proxy is nice for various reasons. But platforms like Discord and such are complex beasts and use more technologies than HTTP(S).
The only reason. Plus, it's a single source of truth and configuring an auth with a reverse proxy is far easier