I don’t hate that electron is used for everything, I just hate electron itself, mostly. Starting with that it’s memory consumption, measured at the example of Discord (though that may be not 100% accurate as they use a custom version), is higher than just using a separate FF instance, with a separate profile. Works for Discord and Spotify (though spotifyd + spotify-tui is better anyway). Signal etc. is still only available as an electron app.
The biggest problem I have with electron is more of a problem with Nvidia though - combining Nvidia + Wayland is bad enough, especially for windows refreshing below 60 Hz, as this causes them to flicker as in letting stripes of the wallpaper through. Electron apps are even worse, not only do they start to flicker as whole after not being in focus for 10 minutes, which is very annoying with them on other screens, but they also start to ‘lag’, as elements don’t update fluently. That affects EVERY chromium based program - including steam.
We were so close to a much better version of electron. Mozilla just killed off the concept of a separate engine, like chromium is, due to issues with low demand but high cost and instead only has the main FF repo now. A separate FF engine would very likely mean a FF based electron alternative would be built by the community. Bug free, fully compatible with everything, not under Google’s control.