To them it was totally out there. A more socially comfortable person may do the same kind of thing, but it feels normal to them and they don't see it as any kind of big deal or accomplishment.
Actually, what this blog post really reminds me of is a breathless 'Field Report' by a clueless but eager beginner in that whole Pick Up Artist subculture. I wouldn't be surprised one bit if the guy was into that stuff.
Also, the author is of Indian origin, being from Uruguay myself, I'd guess we might have more class/social status awareness; most wouldn't dare crash an Elton John party.
I also agree that he found out for himself some things that other subcultures had already found out, for example I think Kevin Mitnick says something about suits and the right attire in his book The Art of Deception, the Pick Up Artists probably say something of the sort, and many books and movies about scamsters also highlight it (Catch Me If You Can comes to mind).
Not that I'm defending crashing high-security press functions with prime ministers, but when did seeking attention become a disorder? When will we stop calling the slightest deviation from an idealized median a "disorder?"
Aside that the attention seeking is very obvious from the formatting of the text, the interesting thing is that he did really nothing special. Naturally, credits for getting the right attitude that let him enter, but for the rest, what he's describing is not different from a socially comfortable (skilled, for the nerds) person.