Earlier quoted context omitted.
TL;DR, the gist of the "wrong" is that we've been trained by "trainers" (over-padded athletic shoes) to run in a straight-legged, heel-lands-first manner. Any reputable running clinic will teach you to make contact with the ground at the middle of your foot with a slightly bent knee. That's just well understood, proper technique, regardless of footwear. The real problem is people hitting the pavement without learning…
Having been to a run clinic, I can absolutely call bull on the claim "Footwear is irrelevant, here.". At least the run clinic I went to assured me multiple times that my impression that wearing "trainers" specifically and greatly increases the difficulty of running "correctly" by striking with the middle of your foot with slightly bent knee. The large heel of virtually all training shoes makes landing in the middle o…
I've run on regular runners for years. Nothing about them makes good technique harder. There may be less feedback you're doing it wrong (in the form of less pain and discomfort), but the designs themselves don't stop you from running properly.
That said, it's not easy. It requires real self-awareness and a willingness to fight the urge to overrun your stride length.