While I would certainly like for Reddit to experience the consequences of its actions, I don’t think it actually matters all that much.

Most people will probably go back to Reddit, but there will be others who will not. Right now, as far as I can tell, the best thing to do is not to hope Reddit fails and everyone has to come here; but just comment, create, etc, here and make it a community you are happy with regardless of what Reddit does. (Especially since in all likelihood, Reddit will keep on trucking along for a long while)