I'll occasionally find a decent AM music station even these days, and when it's not being overwhelmed by all the modern RF noise, it sounds just fine.
It's not really a good idea to look at these two stations to get an idea of the health of the entire AM market. These two are giant class A clear channel stations that date back to the 1920s and the origination of AM radio licenses. Being in the center of the continent they can do omnidirectional broadcasting without "wasting" power like a station on the coast would. They're among the few that can still afford to be "local" station with very little syndicated content (and broadcast a lot of sports to vast swaths of the US and Canada that have no local professional sports team), and they'll probably be among the last of the AM stations to shut down.
I invoked the old radios because you certainly heard a lot of music through them and they all used AM, whether over medium-wave or short-wave frequencies. Same for the ubiquitous All-American Five tabletop/kitchen radios; I've owned them, they sound just fine if you can find an AM station that's playing music.
It transmits almost the same audio bandwidth as does FM. The problem is the cheap and crappy radios designed for the USA market which have flooded the market.
Whatever, try getting a high-quality AM radio and having a listen. For example one of the upmarket SDR radios with variable IF filters.
It's worth noting that for decades, FM was considered a graveyard of talk programming, with occasional classical mixed in. Today, the situation has been reversed.
In cities where there is enough money to produce good content, AM radio does well. In smaller places, where there isn't enough money available to create good content, AM stations are very often relegated to satellite- and internet-fed formats.
The most recent Chicago ratings I can quickly find¹ (June, 2022) show AM doing well, with AM stations ranking #5, #11, #23, #25 and #27 in a market of over 50 stations.
But even in small places, while the FMs will dominate all day long, a good AM or three will dominate the morning drive when they present local programming.
Electric cars are starting to be a problem for AM radio, which is why so many now have FM translators, and free internet streams. But AM will have a place on the air for a very long time to come.
/I've worked for about a dozen different AM stations in my lifetime.
¹ https://robertfeder.dailyherald.com/2022/06/13/chicago-radio...