Essentially, the big issue is that Twitch went from a 70/30 sub split to 50/50 for a lot of its larger creators. Most smaller creators started at 50/50 and once they grew they were able to negotiate better contracts for the 70/30 but it was since then removed.
The biggest issue imo is that streamers don't fully comprehend the costs of Twitch and say things like "Amazon can afford it" (Quote from a major streamer on the platform). What they fail to realize is that Amazon isn't running Twitch as a charity and if it continues to not be profitable it could be shut down just like Mixer was.
I am not bootlicking Twitch either, streamers need to eat and taking 50% of a major revenue stream is a difficult pill to swallow.
The actual answer, there is no reason to switch. The vast majority of users do not care about Linux or why they would want to. For us there are lots of benefits and things we enjoy about getting away from Windows but for them "why?"