Again - where did I say that you weren't supportive - I have no idea of what you do so why would I say that. I said that its the pretentious people who are usually the least supportive because the more complicated they make something the better it makes them look. I did not say you were pretentious.
I also can't see how stating a historic fact about the origins of modern day horse riding is pretentious. I'm interested in the history of the human race as a whole and its origins and the horse has played a major role in the journey. Does the desire to learn and gain knowledge in any subject from pop music to motor bikes to space travel make a person pretententious? I hope not as that's pretty much going to throw education out of the window.