This doesn't actually bother me. I find video recommendations on social media and via other channels I follow. I think the big downside here is that without any sort of free tier less people recommend Nebula channels because most people can't watch the content. Most often it is a YouTube recommendation that I then see is on Nebula.

I think in an ideal world the recommendation engine and video host would be separated. You could be recommended videos on all platforms (including single-creator websites).