

It does take a while to join all the communities you were subscribed to from your old instance, but I don’t think it took close to an hour. Of course, my new instance accepting my application did take its time. And I think that was several hours. But still: You give a few details today and continue tomorrow by subscribing to a bunch of communities.
I had to google the Dead Sea Effect: it means that when a workplace has a bad culture, the most skilled and ambitious workers are first to leave and those who have a habit to do the minimum will remain.
Anyway, I’d say this effect is weaker in this situation, because many workers are there truly to serve their country, not merely as “generic workers”. They might feel that they have something important to contribute to the society, which means there’s an actual chance for even some of the best to return.