This...is actually 100% true. One of the biggest struggles I've personally had in security is to not be super jaded and cynical. Helps immensely to not be in an organization that tolerates (or even rewards) shoddy security practices (at least that's how I solved it).
I do agree. That's actually part of why I called out the language: maintaining balance (as well as not cussing in front of the wrong people) are critical skills for security professionals and sorely lacking in many would-be candidates.
His educational advice was good but the attitude he shares via diction is unhelpful at best especially to folks who do not _yet_ have an awesome job in infosec.