I mean, I'll give you a non-analogy argument. That "ton of free content from Threads users" is not desireable. In fact, if early reports are anything to go by, Threads is already largely populated by brands and thoughtfluencers, all in a race to the bottom to capitalize on mindshare in a new, unexplored space.
IMO, neither that content nor those users would be beneficial for the fediverse in the long run.
such_lettuce7970