In my experience, people with little talent or knowledge or ability tend to be the "know it alls". Anyone who has really spent time in the saddle tends to be a bit more humble.
I remember a girl in college that bragged all the time about her great knowledge. I reluctantly agreed to let her ride my fat, lazy pony. She was obviously terrified on the little horse. Eventually, she brought her horse to college. This was the horse that was better than everybody else's horses. The horse arrived in a rickety, homemade trailer pulled by a station wagon. When the infamous horse that was greatly superior to my horse was unloaded, it was underweight, had long hooves, and was filthy. 200 pounds later, it was not a bad horse, but she really would have been better off keeping her mouth shut.