I stopped having the same issue of 100s of tabs of "math videos that I was going to watch one day" when I started saving them in my private playlists. Now I just have 100s of videos in playlists that I just look at longingly but never watch.
What works best for me now is to do my best at putting tabs in the correct group tbh most gather while debugging and then I can just kill the group when I'm done.
Problem is the ADHD and groups get contaminated. Mostly a few casualties is actually fine but sometimes the group gets too mixed. Eventually I nuke it all
