I agree with all of this, except the first point, and that’s the reason I’m leaving a comment rather than a vote:

I’m annoyed at calling people who dislike an app and choose another website “refugees”

“Refugees” aren’t people who “do not like the app”. I agree that the term is poorly chosen, and offensive to actual refugees who had to leave their lives, home, and a good part of their identity behind, because of a traumatic, catastrophic event; and that “explat” (for “ex-platform”, a play on words with “expatriates”) would be a more fitting term, but the “explat” actually came over because they have never liked the app, except now, it is forced onto them. Moving over isn’t a choice for many, the choice is actually between “not using any reddit-like service at all anymore” or “using what exists aside from reddit”. And in that context, I think you can clearly see why the “refugee” term came to mind (of privileged people who failed to see the humanitarian implications and the belittling of dramatic experiences and suffering of others).