I agree, both in theory and that it's easier said than done, but I don't necessarily think that education is a primary reason, but merely a long term prerequisite of the project surviving.

I'm sure some are convinced LLMs can (eventually) manage everything, and others (I'm leaning more here) are convinced that you will always need a minimum amount of people both educated in the fundamentals and the domain to steer the project, and these people wont exist down the path of non-human PRs.