This thing can be true an it may as well be false.
An anonymous guy telling things that we have been hearing for years and absolutely no proof (what about a list of those fake accounts? Or any analysis?).
I will ignore this until something more concrete comes out. And i think everybody else should too.
Actually the European Commission account is one of the most followed on the Fediverse.
At least some european institutions use european technology
https://ec.social-network.europa.eu/@EUCommission