The thing that wound me up was his use of "do you know what you're getting yourself in for".
Letting yourself in for! (Or getting yourself into.)
I thought lots of the examples were useful and he did come across as trying to help people not make common mistakes. Tbf he does say at the beginning that his will be a particularly academic slant and not to use it as your only resource. (But looks like this was organised by Seren which is a programme for very bright kids in Wales so makes sense to be more academic and less vocational I guess.) I don't think he's saying you have to be an anorak to be worthy, just that they are looking for people who are right for their very academic courses, so being a non anorak is not in itself an advantage. If you can relate your other attributes to the course, then it will help.
I liked what he said also about being aware that extra and super curricular opportunities are not open to everyone - not just work experience but sport and music provision is not the same everywhere either as they often cost money.