After reading both admin statements I'm not sure which side I fall on. Both raise legitimate concerns.
On one hand, it's incredibly shitty to shame someone for how they look, regardless of what they're doing.
On the other hand, fetishizing childlike appearances is also pretty skeevy, even if everyone is an adult.
However, my understanding is that this is how the fediverse is designed to operate.
Everyone has the ability to host whatever content they want and also choose which instances they want to see content from.
Blahaj.zone isn't going anywhere and if you still want to see the stuff there, there are numerous instances that can let you do that. Accounts are free.
I'm not sure that's equivalent comparison. I'm not sure of the community either, but my understanding is that everyone involved is an adult.
R/jailbait was hosting sexualized content of literal children.
This is closer to blocking a community because you feel that the models under the "teen" category look too young, even though they are all technically adults.