This sounds like a nice addon, sadly most of my YT consumption is done from my Nvidia Shield TV with STN, so I still get those annoying thumbnails I think (I have them in my home screen and that's where I watch them or add them to the list to watch later within the Shield menu).
I'd have shared this on r/Piracy, but that site is not cool anymore and it is only flooded with dumb memes and bots, now they can copy this content from Lemmy if they want :)
Respawn sucks though.