I was first introduced to purebred Morgans in western Mass in the early '70s. (Bobbin Hollow Farm, and a fellow boarder at the Mt Holyoke barn.) They were definitely saddleseat show horses, with weighted shoes, trained with rattles around their fetlocks. They had good temperaments, but were “not my style”.
Twenty years later, in Virginia , one of our neighbors had several Morgans, which they rode in Western tack, mostly trail riding. They were very relaxed and safe. One of them took really good care of the wife, who had bad arthritis. Hard to believe they were the same breed.
They had a young mare, Statesman Serenade, that they wanted to sell. They paid my sister to train her as an eventer, and she enjoyed her a lot. She was sold to a teenager in Mass, who had a lot of success in both lower level Eventing (Area I year end awards) and in Morgan shows.