There are two things slowing down the migration. One is the "network effect" https://en.wikipedia.org/wiki/Network_effect (which is really strong in reddit) and other is the confusion and bugginess of Lemmy right now as lemmy is still in its infancy. Decentralization makes this a bit confusing to use and it doesn't help that some posts etc are not showing up due to bugs or lack of features so you are not sure if the problem is you or lemmy but regardless of all that, federation is better than the reddit empire so we're on the right track

maybe if you're a federation citizen, but for a ~~redditor~~ klingon, it's about the empire!