Every GNOME install tutorial:
please install this 3rd party application to install even more 3rd party extensions, otherwise your default experience will be shit.
Meanwhile KDE:
here you go, everything you need is here. Want more? Want less? Just touch me and find out, I can make your dreams come true, baby.
I guess it's better to get used to your own editor app, which could be used for anything, not just Pixelfed.