lol, you & one or two other fanboys clearly have some weird fascination with the broker guys on 16 candles don't you.
They don't have a superior knowledge at all, neither have they ever claimed to be an elite group. They're just a lot more experienced than you & have been around the block a couple times.
Those comments were directed at them by one of your fellow fanboys during one his comical, emotional meltdowns, something they delight in reminding him of whenever the mood takes them.
They simply encourage interested parties to view the playing field through a different lens by focusing on & implementing a minimalist, low maintenance, totally objective & logical approach to identifying, filtering & executing high probability bets.
I think a more accurate representation of that quote was folks have no need to predict, not that they shouldn't. If you want or need to predict then knock yourself out mate.
The fact they don't subscribe to the majority of advice, information & material bandied around this site is to their credit & my benefit as far as I'm concerned, & amply justified judging by the regular tales of woe & despondency regularly witnessed around most of these threads.