I used to do 6 meter AM on a Lafayette HA-460. I had a few nice QSOs on 50.400 during e-skip openings, and a couple of us used to have a Sunday morning ragchew on 50.400.
To their credit, there are some hams local to the region that are doing this now. One area club has a 10m AM net during the week, and several of the participants are using modified older CB radios so they can re-crystal, re-tune them to get to 29 mHz.
Another club is doing a 6m AM net, although I found it funny when they first started doing it, and many were complaining that their new rigs (like FT-991a or other modern radio) sounded like crap on AM. Well, yeah...duh ??? Now they all have tube rigs, and complain about maintaining them...again...duh !
That’s why I stopped messing with all this over a decade ago. It is great fun, but it is like maintaining an old car. Every time you take it out for a drive, something breaks.