I love watching other people practice because it reminds me that no matter what skill level we're at, we all make mistakes and are all pushing in the same direction. This sounds terrible, but when people mess up in practice I guess I feel closer to them in that way ("hey, he does the exact same thing I do when I mess up", etc). There's an Adam Neely video where he does a five-hour practice stream, and he makes a lot of mistakes and gets frustrated towards the end (which was totally relatable to me, I loved it). I guess it's just humanizing to see that we aren't practicing alone in a bubble, and I think it also helps not to compare yourself (for me, anyway) and all of your own practice flaws to the perfect performance version of another bass player.
Eidt:
Twitch - this is so real. I recently went through this myself and I've updated my right hand muting technique to address it. "What am I not muting", at that moment I felt like we were brothers

Double Edit: I'm kind of skipping around your video, but I really like the idea of practicing with a backing track like that for scales and arpeggios. I usually just do this on my own with a metronome (or without, bad, I know) but now that I've got a new piano, I can probably sequence some nice tracks in Ableton for the piano to play (using an electric piano or vibraphone patch). Nice idea, think I'm going to steal it.
Progress, not perfection. Keep it up!