It’s concern-trolling and astroturfing. There are lots of proprietary platforms that must feel threatened by the Fediverse so it’s no surprise that the classic divide and conquer strats are making an appearance.

Just use whatever platform you want and don’t feed the trolls.

PS: memes like this just serve to perpetuate and exacerbate the flamewars, so bravo if that’s what you were aiming for.