I've found most people who are deeply critical of peer review as a process (and not just how shady modern journals are) have never engaged in serious scientific

I've found most people who are deeply critical of peer review as a process (and not just how shady modern journals are) have never engaged in serious scientific work. They have no idea how lost in the weeds researchers can get, and how useful having a somewhat uninformed 3rd party see if they can parse your prose is for having a work be understandable. Commercialization really only applies to a very small subset of scientific discoveries