It should be the users choice to block Threads, not the federation. What does Meta loose in getting defederated, they’re already able to scrape like everyone else, you’re just going to inconvenience users wanting an alternative. Some people want to see thread posts while also avoiding the data hell Meta is. Mastodon is a great way to do that and because of this will gain tons of users. Defederating will only gain meta more users since it took away the alternative option. Not everyone cares about the ecosystem like Facebook and Instagram but love twitter and need that addiction fix. The very small amount of users on mastodon will not make a dent in the profits of Meta at all.
This is fine.