It's harder to do this with a remote control, and harder to hand the remote to a visitor and say 'watch whatever ya want' because there's no direction and the options are infinite and wait I didn't mean to delete that and wtf why is it trying to reboot for an update I don't know the password aaaaagh.

There's room for both, they're targeting entirely different crowds.

But yes, I absolutely do this too, it's so much more flexible and lets me run sponsorblock and other plugins in youtube/twitch/some random site I just found. Those are the real killer features for me, so it's very unlikely that any media-center app will ever convert me.