Let me quickly sum this up. We have a guy who works for a tiny online training company that provides a whopping 7 classes talking about how online vocational training is going to make traditional college irrelevant.
One of the largest online vocational trainers, PluralSight has 1300+ classes online, and you don't hear them spouting nonsense about not saving money to send their kids to college. The don't spout that nonsense, because they understand their training supplements a CS degree. It's designed to provide professionals with timely knowledge after they get their meat and potatoes from the university.
Can we replace our university education with something more affordable and accessible? While I hope we do, it's not immediately clear how that's going to happen. There's a lot of vague hand-wavy ideas, but nobody has really pulled off creating an alternative education program that's earned industry respect. Certainly not Platzi, and based on what I've seen so far, their curriculum seems to be designed to appeal to students rather than people hiring.
I too am tired of universities jacking up prices so they can build extravagant and academically useless facilities and pay for extravagant salaries for administrators and football coaches while giving actual educators the shaft.
While I hope that happens, let's not start gambling our kids' education funds based on the insightless advice of a guy who literally has a financial conflict of interest on the subject.
Don't feed the trolls, especially the PR variety.