True to some extent, and I do this, but some aspects are unavoidable. For example the GTK save/open dialogue is used by Firefox, and it sucks (why can’t I type the fucking path in?). There aren’t good and popular alternative browsers that use Qt or any other toolkit with a decent dialogue.
The software might be, but what makes a social network is the network effect, and the biggest public english friendica server has a few hundred users.
I had an account in like 2016, but it got deleted after a few months due to inactivity…