It is, but Havana Syndrome doesn't seem to have much to do with communism. Every country spies on every other country - even allies - and embassies are good places to do that - so there are all sorts of radio beams flying around those areas. The simplest hypothesis is that one of them accidentally also interacts with humans and Cuba doesn't really care much to fix it (wouldn't blame them).
> Havana Syndrome doesn't seem to have much to do with communism
Of course, this is actually about Unitary Marxist–Leninist one-party semi-presidential socialist republics, not communism.
> so there are all sorts of radio beams flying around those areas. The simplest hypothesis is that one of them accidentally also interacts with humans and Cuba doesn't really care much to fix it
No, that's by far the most complicated possible explanation. You can measure radio waves, and they did, and they're normal. We also know how radio waves interact with humans, and it doesn't cause Havana syndrome. Radio waves have a frequency, and all of those frequencies have been known and categorized and studied for many decades.
Its seriously a million times more likely that someone has found the brown note and left it playing on a laptop in the conference room. That's how insane it is to say that there's a radio beam that is accidentally interacting with humans and causing these supposed symptoms.