Sure they are unethical. But the millions of users who have joined them are not and they are not that tech savvy to have even heard of Fediverse. Federating with them opens 2 avenues: Possibly decrease the influence of X/Twitter as it gets more toxic and introduce general people to the concept of Fediverse and give them an option to easily migrate to one of the better Mastodon instances in future from Threads.
Sure they are unethical. But the millions of users who have joined them are not and they are not that tech savvy to have even heard of Fediverse. Federating with them opens 2 avenues: Possibly decrease the influence of X/Twitter as it gets more toxic and introduce general people to the concept of Fediverse and give them an option to easily migrate to one of the better Mastodon instances in future from Threads.