From what it sounds like, the talk wasn't aimed at established Bitcoiners (who are the more appropriate audience for the topics you mentioned). It sounds like a more fundamental 'here are some problems with the existing system of which you are a part, and here's how Bitcoin is uniquely suited to address those problems'. Perhaps it's hard for you to empathize with noobs because you've been in the space a long time, but these concepts are still going to be alien to people who haven't considered them, especially if they've been long successful in the legacy system.