The beauty of reddit is that you can create your own subreddit with your own mods and have the discourse that you want. You're not held to just sticking with the subreddits that are given to you.
The "just start your own" strategy rarely works, and at the end of the day you're still on a platform that can ban your little upstart for any reason it wants. That's assuming the people in the main subreddit even learn that your alternative exists, as the mods don't want people leaving their little fiefdom and can ban you for mentioning it. This mindset is also counterproductive because it advocates for completely and totally giving up any effort to address the problem in the main subreddit. It lets the troublesome moderators run unchallenged and can make things even worse.
No? That’s not how Reddit works, you join the subreddits you want to join