Yeah once you get to that level, their coaches aren't trying to change their technique. Any legitimate coach will know that all bodies are different bio-mechanically, so everyone is going to be slightly different in their optimum form. It's great to coach ideal technique to beginners, but as they get more advanced they will inevitably make adjustments that work best for their specific leverages and joints. Lü Xiaojun, for example, does really well with the squat jerk. All in all though, it's really a shitty way to jerk for 90% of weightlifters, but it works for him.
And yes, getting to a 2x back squat was one of the highlights of my lifting career. The most memorable lifts I've ever made were probably hitting 225lbs on flat bench for the first time. Hitting 315 lbs years later was less exciting. My first time clean and jerking 225lbs was a big one for me too. That and probably the first time I did 20 pullups and ran a sub 18 minute 5k.