Debian

Source?

Self-hosting doesn't really fix anything, the developers can still control the program and read all your chats/calls.

No, you should have the freedom to use it if you want. All I'm saying is that you can't really call TeamSpeak a better alternative, when they're both just as bad (they're both proprietary). If you're looking for a better alternative, consider using Mumble, it's FOSS.

I may not read the source code of every tool I use, but even if the average user doesn't read the source code, having it available for inspection by others in the community increases security, trust, and overall software quality. All a user really has to do is look at the license of the software they use, typically a GPL or similar license, and consider how reputable it is. Not only that, but if you're on Linux already, you can just get most of the software from your distro's repositories.

So you're just trusting them to not do anything bad?

If you can't audit the source code of the program, how do you know if TeamSpeak isn't malware?

Isn't TeamSpeak proprietary though?

What if they're shoplifting at my store?