I don't know why anyone was saying that when Anthropic clearly knew Opus 5.5 significantly outperformed Astra at the time of Astra's launch. I think it might be a good exercise to go back and find out who called Astra a "gut punch" and lower your credence in their future claims.
Random people on twitter, sorry, that is the best source I have, not having any visibility inside these companies :)
So I'm happy to accept your view just as easily, stranger on the internet, since it logically makes more sense.