I disagree with that assessment, and it doesn't match with what they said in the post. 4 bullets justified the decision, all of which outlined philosophical differences to my eyes.
It's true that in the future, they may have sufficient mod tools/capacity to overcome these philosophical differences with brute force. But at minimum, it is a union of both practical ability and philosophical differences that led to this decision and that is totally in line with the decentralized nature of the fediverse.
I don't know if it was the right decision for them. Time will tell. But being able to make those decisions on their own judgment is crucial to the longterm health of the system. We're two outsiders to Beehaw. I can't speak for you, but personally, I chose not to register at Beehaw because I didn't like the sound of a more curated safe space. I also chose not to register at Lemmy.world, because there are things about it that rubbed me the wrong way, too. That's a crucial part of how the fediverse is supposed to work.