I'm sorry, but what are you talking about? Yes, a core idea is freedom of movement, but you make no case for why that makes EU Hacker News infeasible? It has nothing to do with where people write software. I'm using US Hacker News, and I'm in Europe, is that wrong/bad, or what's your argument here?
EU Hacker News isn't infeasible my argument is rather that it's largely pointless. The EU should avoid key US dependencies, but that means things like we shouldn't design a system that needs Microsoft's stupid "Co-pilot 365" or whatever they are now calling Word and Excel, rather than it's important never to visit a web site hosted in the US.
"The new government policy shouldn't require iPhones" is a long way from "Nobody can read The Onion", and even in its hardcore "Sign up for YCombinator" mode Hacker News really isn't anywhere close to the former.
Although because idiots I am no longer in the EU I'm in Europe too.