#fuckselectionbias
More generously, his point is more along the lines of "Conscientious, successful students attend lectures, and use the recordings for revision. If you want to be a conscientious, successful student, attend your lectures."
He's not a statistician anyway

It isn't, but I guess that's probably something you could "try" to factor in when selecting uni's.
I know that, personally, one of the main reasons for opting for Melb > Monash was the insane 4hour+ travel times. I also know of people who live rural but still come 4 days a week (which is more than I do) for their lectures/tutes. If one wanted to be productive, the extra travel time could be used to study (revise flashcards on the train potentially?). Granted, the most i've experienced was around 3 and a half hours of travel time per day in high school, but I felt I coped with that quite solidly by just working a bit harder at home and the occasional reading on the bus (and you had to go to school every day back then).
You've written what I would have written.
I think it's also worth remembering that reordered lectures are relatively recently (early 2000s) and their virtual ubiquity (alongside near-ubiqitiuos broadband access) is even more recent. It's still a process, and a lot of academics are going to be resistant to it simply because it's unfamiliar (plus it's demoralising as hell addressing an empty theatre).
Either way, the fact that lecture recordings can allow those to access an education that they may not have been able to otherwise access (if you live in the western suburbs, Melbourne is the closest uni anyway.) The fact that lecture recordings might enable those who can't otherwise attend a university to attend one is a very good thing.
I think his main, hidden, point is that a lot of people
say they'll use recordings as a substitute for attending lectures, and don't do that, and then find themselves watching 36x4 lectures in SWOTVAC (I saw this far too many times when I was an undergrad). If you attend lectures, it forces you to engage with the content in the semester. I'm not really sure if it's an academic's job to care about this, however.