Will this undermine most of what makes IAmA special? Probably. But Reddit leadership has all the funds they need to hire people to perform those extra tasks we formerly undertook as volunteer moderators, and we’d be happy to collaborate with them if they choose to do so.
Thing is, only total nerdburgers like us (myself included) use Federated social media. WE understand the dangers presented by “gentlemen” like Elon and the paint huffer, but mainstream internet users just aren’t involved enough in tech to care. The celebrities who were using Twitter to promote themselves will, almost without exception, just abandon social media entirely. A few have left for Mastodon purely out of spite (ie Kathy Griffin) or have explored Mastodon as an alternative (ie George Takei), but the big fish will just scatter. You’ll get George Takei on Masto, but George Clooney, not so much.
Perhaps it’s for the best. When a web site achieves mainstream popularity, that’s the first step on the road to enshittification. The internet was more fun when it was underground.