Then again, beginners need to also learn to mix play up a little. It's all well and good playing tight, mathematical poker, but you aren't going to win much at all doing this.
Personally, I see people like that and I'll steal their blinds time and time again. They stay in the hand, unless I've got a good hand, I'll just back down. Predictability is suicidal to an extent, so I wouldn't get too much into the habit of saying I will only play high pocket pairs.
I always think of it this way - is my hand good? If not, is it cheap to see the flop where it all may change? If the answers still no, I'll back down.
If I can see 3 free cards for next to nothing, though, I will do it - I think that beginners should get into the habit of this as well. Poker is about experience, about thinking about your hand and others - not considering how a hand may pan out is seriously limiting the way you play and won't do you any favours in the long run.
The advice isn't bad, it's just of limited scope, were all just adding to it