Yes, because Lemmy is still at that early phase of its existence where half of the posts complain about reddit, Threads, Twitter, etc, and that's just not something I'm interested in. Waiting for it all to die down a little.
It's almost like rainbows are recognisable, cover a wide spectrum of colours and are the natural choice for a device that advertises its RGB capabilities. But yeah, it's probably the gays or whatever.
Does it even matter? Interacting with Lemmy from Mastodon is wonky and borderline useless. If Threads is the same, I doubt federating or defederating with them will make any difference.
I really think they are not, those are all account from people who have actively signed up. Threads really is that much bigger than Mastodon, and it's not that surprising.
People left reddit because reddit started charging for data access, and not the same people say they don't want others to have access to their public data.
They can scrape that data withiut federating. Anyone can, there's a public API. And I suspect once they federate Threads, Mastodon will be a tiny share of the resulting fediverse.
No to say they won't ingest all that data, of course, they'll get their hands on everything they can, but I doubt it's the primary motivation behind it.