If you squint a bit, that's not that far off of niche pro athlete money (especially given that the bottom end doesn't have the same discrete threshold that pro sports do). Per [0] the best-paid NHL players are making ~$10M/year, and I would expect the NHL to be more efficiently monetized than internet streamers (we know that making money as "talent" on the internet is a tough proposition).

[0] https://www.spotrac.com/nhl/rankings/