The @EU_Commission has close to 100.000 followers on ActivityPub/Mastodon. So what happens next? Well. The EU will shut down their instance https://social.network.europa.eu in a few weeks:
"EU Voice and EU Video will be officially closed on 18 May 2024."
So much for their promises of having an Open Source policy and being focused finding better ways to communicate with us outside of walled gardens like Twitter, Facebook etc.