I think the points you made are appropriate. My point to lfc, without offending or providing fodder for the certification/ability arguement, is what credentials does a coach require to assess an officiating crew. Notice, I never mentioned certification by a licensing organization.
I am assumeing lfc is referring the the high school football coach or PE teacher forced to take the position of soccer coach due to a lack of "qualified" soccer coach.
I would hope that there is a soccer officals association that would welcome the evaluation system by coaches. As I stated earlier, the SCHSL referee certification program is a sham. If they cannot produce the quality required it is time to look to another organization.