Well said, it’s totally true. One person can say “so and so extracts too high” then the next person repeats it, until it becomes a fact without actually examining and thinking it through individually.
For example, in my case the hairs below the border of my Norwood 6 demarcation line is the thickest and healthiest hair in my entire scalp. In fact, Dr. Wong in my last Instagram interview agreed and said that in most cases this hair is safer, because of retrograde alopecia becoming more prevalent. Bottom line is there’s no universal safe zone, because we all have different patterns, cases should be looked at individually.