If the API fiasco hasn’t really deterred enough Reddit users to convert, then almost nothing will. Except maybe when Spez gets around to monetizing NSFW subreddits and subreddits in general that are very large. But even then, I still say it won’t be a giant deal. They’ll come here but they’ll want the Fediverse to strongly appeal to NSFW content and really the Fediverse is fine without it poisoning itself with that filth.
Truthfully, no.