[gnull]

I achieved many of the things this extension does with the following uBlock Origin filters.

    www.youtube.com##ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy
    www.youtube.com###comments.ytd-watch-flexy.style-scope
    www.youtube.com##ytd-browse.ytd-page-manager.style-scope[page-subtype="home"]
    www.youtube.com##ytd-guide-renderer
    www.youtube.com##ytd-vertical-channel-section-renderer

They rip off pretty much everything except videos, search bar and search results. Although I found myself commenting out the first line to keep the “related videos” bar next to the video, because sometimes it has useful things.

But know that these filters break some functionality (which I, personally, do not use) like uploading videos or showing your subscriptions page.

[marapuru]

Great, thanks for sharing these. When I read the OP I initially started trying to apply the filters in uBlock by myself. But I couldn't figure out how to remove recommendations but keep search results (kinda essential) visible.

[aswerty]

Just applied these filters - I think I'm going to like them. I definitely fall down the YouTube rabbit hole from time to time. Cheers.