Nothing, it works just fine for now for me too. I'd still recommand an open source app called NewPipe over YouTube on FireFox, it seems way less hungry battery-wise... and there is likely also less data collection happening.
Oh! Thank you! I knew of NewPipe SponsorBlock but thought it wasn't in F-Droid because the F-Droid folks didn't like that it calls out to the SponsorBlock service. I didn't realize that it was possible to add custom repositories to F-Droid, so now I've done that and it seems to have linked up perfectly. TIL; thanks!
It provides the ability to skip ads without pressing the 'L' key. Meaning that one doesn't have to be at the keyboard to press anything. It also skips to the end of the ad, so you never have to use the 'J' key if you pressed 'L' too many times or if the ad finished 9 seconds ago.
I also prefer NewPipe for longer videos, especially ones I only need audio for. I share to it from the Youtube app typically, which has been getting more and more annoying (from one tap to 3 right now).