The nastiest trick for me is that no matter how times I tell YouTube not to show me shorts on the home page, they always sneak back in.
The top tier engineers were struggling to make it so that auto-play would stay off. This is no surprise.
Now when I go on mobile Safari and want to switch off 'video previews' (for the thousandth time), and I tap the switch, it stays switched on but the 'Settings saved' thing comes up on the bottom. You have to tap it again to actually switch it off. I wonder if that's a bug or intentional too now...