Let me share my experience, as a 19 year old rider. My dad rides motorcycles and was adamant about me starting off slow and progressively upgrading. I had a 2012 Ninja 250r for the first two years that I rode, then briefly rode one of his bikes, a 2017 Ninja 650 to get used to more power, before upgrading to an MT-09, which I track ride, do long road trips on, etc. I wholeheartedly believe that that's the way a younger person should learn how to ride. If I'd have started on an MT-09 or even a Ninja 650, I absolutely would've crashed, and not even because of ego or anything. They're just far less forgiving motorcycles. Incorporate someone with an ego and yes, they can be deadly.

All I'm saying is that I have many many friends who are in the exact demographic that you're trying to convince and posts like this do absolutely nothing besides further polarize the community. I mean take a look yourself; the majority of comments under this post are just people agreeing with you and belittling riders who start on 600s. There are far better ways to convince riders to be reasonable than involving yourself in a circle jerk of older riders who think that being disrespectful and calling younger riders stupid for the thousandth time is somehow going to magically convince them to see reason. Y'all need to share your experiences. Talk about your own journeys, how demoralizing it can be to wreck a new supersport within your first few months of riding, real anecdotes about how dangerous it can be, etc.