Not where I am, yes some stations have the crazies on them. But the small City where I live has an AM Station. At least daily, it interviews a local politicians. All other stations focus on the politicians in the nearby State Capital or National Politics.
It also plays a bit of middle, right and left wing shows along with music from the 50s. And on weekend evenings it plays old serials from the 20s--40s.
So it is rather unique and gets decent ratings due to its programming.
This is what the whole thing is about.
There are a lot of safety/whether/info stations run by the government. I don't carry a smartphone so that can be really valuable.
This is pretty out of touch. Drive-time AM radio is still a HUGE market in certain places. Think Rush Limbaugh et al. Although, that might be what you mean by "overt foreign propaganda by an unfriendly nation", the fact remains that it's 1) hugely popular by the numbers, and 2) directly beneficial to the certain congressional vermin.
* Radio Sputnik for 6 hours a day* https://en.wikipedia.org/wiki/KCXL#Broadcast_of_Radio_Sputni...