John Gruber describes the Anti-Meta Pact as "petty and deliberately insular" and suggests that the whole point of ActivityPub is to turn social networking into something more akin to email, which he describes as "truly open."1
Tristan Louis says "The anti-Meta #Fedipact can only achieve one thing: make sure that #ActivityPub loses to the Bluesky protocol."2
Dan Gillmor suggests that "preemptively blocking them -- and the people already using them -- from your instance guarantees less relevance for the fediverse."