Because, for the most part, those are the only people affected by these problems. If you don't stream with the intent to maximize your viewer counts and profits at all costs - stream when you feel like it, play what you want, don't chase trends, don't encourage parasocial relationships - you're basically immune to most of these issues.
While I would love to have a decent number of people following me (assuming I get back into the habit of doing it regularly), if no one does, it's really no big deal, I have a well-paying full-time job anyway, I don't need to earn a single cent from it.
For example, I could see streamers who stream for a potential social benefit may feel the need to chase trends, play the more popular games, and other similar things in order to increase/maintain viewership for more socializing opportunities. However they may also have a unique set of problems that streamers who do it for money do not have.
I've never heard of any streamers like this, but if any do exist, they are effectively no different than people who stream for profit because the intermediate goal of maximizing viewership is the same.