I don't know if Nebula is explicitly queer positive or there's just less people, thus less jerks. My family signed up after watching a lot of creators on YT recommend it. So basically, we're watching largely the same content but the creators get more money, we don't have to sit through sponsored ads and we don't have to sift through a bunch of terrible algorithm-based recommendations to get to the content we want to see.
I do wish it were easier to search for new content.
We did the bundle with curiosity stream and my kid loves a lot of those videos, too. It's been worth it for us.