Most channels post just clips of full videos on Shorts, it's not original content.

I've already seen the full video, I don't want to see clips of it again.

Also 90% of my RSS reading is done on a desktop/laptop and it feels "wrong" to watch 30 second vertical shorts on a 32" display :D

Not OP, but because IMO shorts are mentally harmful. They're the mental equivalent of transfats-heavy foods.