@juergen_hubert
To be fair, it's been awhile since I've heard anyone saying we shouldn't grow the Fediverse. I think a lot of those people have had their concerns allayed or have seen the greater concern of these people controlling larger society.
I will also note, to your point of societal collapse or something, that the Fediverse is far more resilient to mass internet outages because the infrastructure is so spread out and 99% of the posts are backed up on most of that infrastructure, not simply on major services like Amazon AWS, but on smaller hosting companies servers, local to countries and communities, and even people's personal home setups.
In theory, the Fediverse could survive the total destruction of the commercially owned internet. (Though, hopefully, we will never have to test that)