If you were a senior military official, tasked with explaining how the operation worked to a man with no domain knowledge and dementia, you'd probably conclude that the easiest way to explain is, "we used a secret weapon" because he can't understand and will certainly blab about it at the next public appearance.

Earlier:

https://news.ycombinator.com/item?id=46754411

https://news.ycombinator.com/item?id=46754101

Related:

Pentagon buys device via undercover operation suspected link to Havana Syndrome

https://news.ycombinator.com/item?id=46608913

I think this actually decreases the probability such a thing exists: well into his first term, Trump appeared to believe that people could not see stealth aircraft.

This article does talk about ADS, "Advanced Denial System", which sounds a good deal like a long range microwave oven, and it quotes someone that Trump wa conflating several weapons systems.

Articles like this raise questions of reporter's and mass media credulity. It looks like journalism's doctrines of objectivity and avoiding liberal bias lead them to publish quotes from known fabulists, and just not be very skeptical when reporting what members of certain political faction say.