I am wondering about this as well. What is going to happen to my favorite small channels? There are a lot of them with very few, but dedicated fan bases. Can I still watch those with having to fork over 10$/month?
Yes, of course. It is up to the channel, not the average user, to decide whether to accept red money or not.
If that channel decides to not take the red money, then their videos will essentially be hidden - you can still find them, but you have to go directly to their page and not through search or something.