• Newpipe doesn't let you leave comments (which was the reason I personally switched to it -- I used to spend too much time commenting like half of the stuff I watched, and I watched a lot) or login with a Google account;
• newpipe doesn't have sponsorblock (which is currently solved by using tubular; note that it may or may not become abandoned like previous attempts by other ppl);
• newpipe lets you download video/audio (although, admittedly, having yt-dlp in termux is still more than handy for bulk downloads);
• newpipe has better (imo) background playback: you can either play or enqueue both videos and playlists (note: I haven't used yt app for a while, so mb it also can do similar stuff)
• newpipe doesn't need play services whatsoever;
• newpipe's ui takes some time to get used to (imo)

I don't think revanced is even a bit privacy friendly, it's just a mod of youtube

If you want to actually fully degoogle, you wouldn't want to use Revanced. Revanced just patches the official YouTube App.

I personally use NewPipe when watching on my phone, but I do have Revanced YouTube installed as well just for casting to my TV. Convenience for me.

@sigmaklimgrindset well, for one, it is a completely separate app

No seriously, where ReVanced is a collection of patches for the official YouTube app(s) (and some others)

NewPipe is a built-from-the-ground, independent, no-Google-Code YouTube client that relies entirely on scraping the website using NewPipeExtractor

As such, the entire experience apart from the content itself differs.