I have had Mustangs since 2008.
AM STILL makes up 20% of audience.
AM in the Dakotas, Prairies of AB SK etc is still predominant due to EXCELLENT ground conductivity!
https://www.fcc.gov/media/radio/m3-ground-conductivity-map

I WILL WRITE my Ford DEALER to see if this is an OPTION. FORD is not the only game in town.

https://fordauthority.com/2023/03/2024-ford-mustang-will-also-ditch-am-radio/

the COMMENTS, by NON RADIO PEOPLE are TELLING!!!!

My guess, is the 37 yr old engineers did this.
All the "old folks" were tossed out years ago with buy outs, etc.

COMMENT ONE from above link:
As a lifelong Lincoln/Ford family owner, and Electrical RF Engineer, I find Ford’s interference claim dubious at best and more likely nefarious. Im currently shopping for other makes.