Well, there's also the data point that demand is so low the AM radio industry has literally gone to congress and asked to make receivers mandatory.
Not being popular isn’t a reason to declare something as dead or useless.
Tho none of that is a reason to force auto makers to include AM radio.
Spectrum is a finite, shared resource. Especially these lower frequency bands.
The commenter with the teslas was saying that AM is dead and FM is nearly dead.