Microwaves, especially at higher frequencies like I think those use, also don’t travel terribly well through inclement weather or dust. If I was ever up against one of those things I’d bring a super-soaker full of brine and just try to get it really wet.
They’re also pricey and high tech, and right now Russia can’t even build a non-stupid tank. For a Western military some variant of this might work, maybe using a more moderate frequency from a phased arra, or just lasers. At short range there’s always bullets. Interceptor drones are also bound to be a thing at some point.