This is a side issue, but when there's a conversation between a human and a media team of humans, it's interesting to at least get some feeling for who might be "hiding" in the team. In the case of @EU_Commission my guess is the people here tagged 'social media':
are the team behind the @. The profile itself says nothing specific about who manages the messages, how their content is decided (e.g. on an internal wiki, on a cryptpad, or on a git repository).