Some videos are very good as learning aids, others are just folk enjoying playing the bass. I don't laugh at someone who is clearly inexperienced and just having fun, plenty out there who could laugh at me if they wanted to. I prefer love and support to criticism and sarcasm - but then I'm a bit soft.
Learning someone's interpretation can be a great starting point, assuming the ultimate goal is to improve one's ability to 'hear' a bassline and produce our own interpretation. If the cover deviates from the original that should be the first thing to stand out to us. We can then find where it should go and thus our skills improve.
So any video ultimately can be a learning tool. Even one we might deem as 'wrong', assuming that term can actually be applied to music.