

I don’t use Gnome, but they hate to expose settings in general it seems and like to dumb down everything (and that is why I don’t use it). The issue here is that the you need KDE, Sway, Niri, Xfce, etc all to implement a setting for this. Middle mouse paste is useful and has been standard on Unix-likes for decades. There is literally no reason to remove it.




It isn’t open source, but DaVinci Resolve is available for Linux. With limited features if you don’t pay. Might be overkill for what you do, and I understand it can be finicky to get it working (needs nvidia, poor support for AMD, very limited format support unless you get the paied version, …).
I don’t really do video stuff, but I did play around with it a few years ago, and it seemed very comprehensive.