There is a lot of running content featuring Hwang Young-cho on YouTube lately

‌Since I am a beginner, I don't know much about running and have just been running blindly,
but I notice he focuses a lot on running techniques to prevent injuries.
Watching him evaluate and correct the form of hobbyists is very helpful just to watch,
but I wonder if he doesn't coach professional athletes?
Marathons were so much fun during the Lee Bong-ju and Hwang Young-cho era, but looking at recent records... ㅜㅜ
I feel like he would do a great job coaching athletes, but perhaps the athletes are too comfortable these days and don't push themselves like they used to.