> your narrative might make more sense if there were any actual evidence or credibility behind the claims that non-EU states are engaged in anti-EU discourse

The uptick I'm talking about is in the last 2 years.

At least one Israeli Minister has bragged about them doing it.

I don't think you need specific evidence of Russia doing it, it's widely believed to be happening by security professionals. They famously had troll farms of people employed to spread disinformation and that can only have been accelerated by LLMs.