I am not in the least bit surprised. Personally, I see very little benefit to millimeter wave unless it is an extremely dense area or an extremely big venue, such as an airport or concert stadium, etc. or like the Las Vegas Strip or Times Square. In places like that, millimeter wave makes total sense. In the rest of the world, it just really does not. LOL.
Especially in the US where carriers thought they could charge a premium for mmWave service even with almost no coverage.