If the Eurosceptic states are alienated and trying to leave anyway and/or sabotage what's already there, what difference would it make?

But it depends on what 'meddlesome' means in practice.

Media and cultural positivity is not the same as political pressure. This isn't about speechifying and posterating, it's about creating a positive image of the EU which voters can personally identify with.

That process shouldn't mention politics at all. If it's cultural and apolitical it's not meddling. (Well, it is, but it doesn't look like it which makes it much harder to challenge.)