The passion, and angst they have for it all is obsessive, and seems very unhealthy. Looking for reasons everywhere for which signals are causing them to go down in views, or not go up. Or not go up as fast as they had planned out in some sort of scaling of the past performance they've had.
I feel quite badly for them, and it's the reason I don't bother streaming even though the few times I have, with their support I get a lot of viewers. It's a completely viable thing for me to do, but the "thing" in question is to be as unhappy as they are, and as obsessed with the detail of if people like me or not.
You couldn't pay me for that hell.
Then again, that's also a problem with a lot of Google services in general. Google search rewards those who post the most regularly too. Could be interesting to see if any bloggers or writers have similar issues with that.
The ecosystem used to favor high demand niches by offering much higher CPM. It is all homogenized now and YouTube is saving the highest CPM ads for the most popular / connected creators. $1-3CPM I've heard is average. Coding videos now get around $4-$6 down from $15-$20 when I started.
Not producing frequently also reduces your CPM. Same with short length videos. Many factors go into the CPM rate now that are not great for creators.