Many years ago when I was actively flying and very current...not long after my instrument rating, the school has a lease back 7AC Champ...so I went for a tailwheel sign off
Solidly the most fun I've had flying was in that thing.
but I never could get the hang of it. I tried a couple other times in a cessna 120 and a 140.
I think you're right about the Cessna's leading to poor instruction.... but I think it's more than that.
I don't think the tail wheels on those aircraft at least most of the time, were rigged properly. The would make a terrible racket as soon as the tail settled
but I think my primary issue was not being able to get over my fear of prop strike when raising the tail. It just felt wrong to me.