Yeah, I LOL'd a few times reading the piece. He says he doesn't proof read what he writes for others, and I guess this adds verisimilitude. And as we all know about written academic work for assessment, it's mostly on questions with (at least formally) well-known answers and the student's input is supposed to be in how well they handle discovering, presenting and (to some degree) assessing the well-known answer...
Consider mature age students at universities. Anecdotally, they usually do better work than young students. And it's mostly attributed simply to better time management and a better awareness of why they're in school again and how to put their interest into practice. So, some older guy with some practice and a small amount of research could fairly easily trot out some decent undergrad work, and even make a good showing in some postgrad assignment.
If the business of education were mostly about the production of scholars, he'd be out of a job, though. Or, at least, one presumes so. For the sake of that claim I'm assuming a scholar is someone who can and will discover and present hitherto unrecognised knowledge.