I don’t see who this gesture is aimed at. Meta execs won’t care. They lose nothing. The result will be the exact same as building a closed platform from the start. And the users won’t even notice because the mainstream doesn’t even know that the fediverse exists.
I agree that getting people away from Meta should be our priority. But we don’t do that by cutting them off from the fediverse and then begrudgingly making a Threads account to talk to the people we haven’t won over yet. We do that by showing them that there alternatives that they can use without losing access to the content they already follow.