I know. I wrote "no evidence for".
https://en.wikipedia.org/wiki/Moscow_Signal
After they got caught they put extra cladding up on the building, and the soviets in turn responded by just making their signal transmission stronger.
There is no scientific basis for the theory, there are decades of research failing to find either a theoretical or empirical basis, while there are other plausible and precedented hypotheses. Every single example you provided however, was immediately technically plausible at the very least. So yes, the theory it was somehow detrimental to the health of the embassy staff is essentially a conspiracy theory. There is nothing behind it beyond motivated reasoning.