To be fair, Signal, Threema and Discord use Electron, and therefore are just crappy bullshit on Wayland.
Using a dedicated FF instance uses less RAM, CPU and disk space, and gives you more control over the application/website.
Discord has a web version, even if it doesn’t support some features, so I use it in FF. WhatsApp has a web version, so I use it in FF.
Signal does not. So it’s barely usable on my Nvidia desktop.
We do not need ““native”” Applications, made with a mix of a web version and a D tier browser engine, if we could just use the already installed, better and perfectly working browser.
Discords Electron was outdated and vulnerable for years, FF would be patched in days or hours in case of a zero day.
Electron uses much more resources than FF. Because every company thinks they need a custom version of electron, every app brings its own bloaty electron environment, despite there being a system one.
Electron/Chromium is extremely buggy on Wayland + Nvidia, to the point I cannot use Spotify, Discord or Steam correctly.