I don't think anyone understands that he has a niche following and doesn't really appeal to the mainstream. He basically just fits this role of super pumped nerd that loves to hear his own voice and ideas.
As long as day9 is a main caster only nerds will watch. Tastosis has a lot more mainstream appeal than day9 / anyone. I can't stand day 9 at all, when he first started doing shows (sc:bw) and had maybe 100 viewers it was okay but the ego is really affecting him and he honestly thinks he is better than the pros in these tournaments. He's like secretly super insecure too and at every point must mention how much better he is than X.