Yeah you could consider it old school, or maybe just a product of another time were people didn’t mind to use multiple software for different uses.

I for one don’t mind using Mumble for voice and XMPP for text chat or one to one calls for example.

I don’t have a computer or smartphone so I only can install one app and that’s it. And I know I might be in the minority when it comes to that, at least compared to the general public. For gods sake it’s already hard to get people to install a second messenger app, not even trying to get them off WhatsApp or other meta crap…