There we go again.
Instructor qualification is measured by flight hours.
That the system worked for years with all the low time instructors all over the world does not count. Get real. Everybody wants a instructor with 100'000 hours and the talent to be a good teacher. But it does not work like this. Most of the experienced pilots do not want to teach and it is far more difficult to show an older guy effectiv teaching methods.
I had the pleasure once to see a very good flight instructor in action with two different students. One was the 100 hour wonder and the other one a bit timid an not sure about his flying. This instructor had the ability to find exactly the right way to teach both of them. Stop the overconfident student becoming a macho pilot and help the timid student to get self confidenc. That is what a good instructor must know, too. But that is something a pilot does not learn in 10'000 h military or commercial flying.
Would be nice if a flight instructor would be judged for his teaching.