Having WoW content creators move over to FFXIV would be nothing but a boon to the game.

Asmongold in himself, is not a bad person and has very respectable opinions about content in WoW. No doubt he would have respectable opinions in FFXIV. Perhaps him migrating over would be everything Square Enix needed to motivate themselves to improve the new player experience and PvP (two extremely weak points that drive a lot of people away from FFXIV).

Unfortunately, his chat would follow and they are barely above amoebas in intelligence, but they wouldn't last in FFXIV's moderation culture and would be culled pretty dang fast. Perhaps a wave of true toxicity would harden some folks who are a bit more report happy towards minor disagreements.

And ultimately, most people who are still stuck with WoW already hate the FFXIV community. What are they gonna do... hate it more? FFXIV stands more to gain from content creators coming over, even if said creators dislike it. Someone in their viewerbase will like it and pick it up which is a netgain for us.