This is a great test of the underlying principles of federation.
Maybe you think that the lemmy.ml creator is an unapologetic human-rights hating tankie.
Maybe you think that he's a visionary and bastion of free-speak.
Maybe you think something in between.
The whole point of a decentralised federated system is that it doesn't matter.
I think people get way too caught up on technical optimisation issues with a language.
The reason a language, programming or otherwise, catches on is ultimately based on how many people use the language. So the lower the barrier to entry, they more people who will use it. PHP has a pretty low barrier to entry to creating a website (however simple/bad) and it has a lot of cultural momentum. I don't see PHP going away anytime soon.