Just because something has worked for you and you found value in it doesn‘t mean it can be carried over to the whole population. That is a very closed-minded and self-centered approach that doesn't bring much success in the long run. It is important to understand that our bodies are dynamic systems that depend on a lot of factors. When you add intra- and inter-individual diffrences to this, it is very hard to understand why would people proceed to make such bold claims. Would you force a tall person with long femurs and poor mobility to do High-bar Back Squats just because you think it's the king of all leg exercises? Would you force a mother of two to go to the gym 5 times per week because you found that anything below doesn't bring progress? I hope not.