My answer is SO WHAT?!
I don't think this is a real big mystery..let me explain as not long ago (8 months) I was what you big guys consider a "beginner" and am still a beginner (maybe ready to graduate)
First, I read every bit of information I could find: magazines, library, internet, this forum. There is 1000! different opinions on what works.
When your new you think the more variety of lifts the better. You see all these bigger guys in the gym doing all sorts of different lifts. When I first read the 5x5 I thought to myself that can't be enough variety!
Then I started getting more structured and had a experienced friend put together a "program" for me. That program consisted of A LOT of different lifts. I ran that program for a while and eventually it evolved into the 5x5, now I focus on deadlifts, squats, bench, military press and rows. And secondary to that I will do some curls, dips, sit ups, etc.
As SaiBot says: The journey within is the longest and hardest..they will learn!
I expect to never stop learning while working towards my goals.
Don't be so judgemental