Just because you need to educate yourself you don't need an education.
Education != college degree
Thiel is offering alternatives, and rather charitably. Is offering alternatives an act of war?
That works for a certain kind of learner: people who are already good at breaking down a problem into constituent parts, who are driven enough to chase down the resources they need and to figure out how things fit together, and who want to learn about the topics that are most available online.
There are a lot of other intelligent people who could do valuable things with an education, but who lack one or more of those characteristics.
Where I disagree strongly with the above "granfalloon" critique of liberal education is that I think it's a side effect of bringing together people from geographically disperse regions and widely varying values and backgrounds and making them live and work together. Profs just offer a framework to think about it, especially relating it to a historical context.