It will disable incremental updates but as long as there is a flashable zip file of the full image you can update using that

You can also quickly unroot then do an incremental update and then use magisk to create a flashable boot image afterwards to re-root

Fair enough, completely understandable

You could try Smart Tube which has built in adblock and sponsorblock and see if that works better on your android tv box

Hmm… no idea then, sorry mate

Are you using Nvidia, if so that might be why I am running it just fine on an AMD gpu on wayland using Nobara

For that the recommendation is ALVR