Teacher Recommendations - are they truly helpful?

What is the best way to address the fact that:

A. LoRs are uncompensated work given by colleges to high school teachers who may have to ration them, possibly denying some applicants the useful insight that you consider “vital to all”?

B. LoRs in practice inject a significant factor that is not student achievement based into the process, in that the LoR writer may be good or bad at writing LoRs (see second paragraph of reply #26), and the applicant’s choice of LoR writers (possibly affected by LoR rationing) may or may not be those with the best insight.