So who is the dictator then? Ruud or the developers? :) We could call him a dictator of his own instance and it is certainly the most popular one right now.
I guess Reddit users don't want to leave their platform, because they are afraid of losing the content and the community. Most of them probably haven't seen that there is a good alternative yet. When we are using one Lemmy instance, we know that there are many alternatives, because we know that that's the whole point of Lemmy. So even if there is a big instance that has most of the users, it should be fine. It would be better if the users were more spread out though.