That thread is pretty darn old...
I've started shutting up about the opportunities I find. Unless I'm amongst trusted company in a restricted conversation. Which is not this particular forum.
Three things happen otherwise:
1. People tell their mates and relations about the nifty trick.
2. Everyone does it.
3. The powers that be close down the nifty trick.
Sometimes the PTB just search for keywords - brand name plus "sc*am" or "l**oophole" or s*imilar - and we see certain threads here gain a following of "guest" accounts as they discover exactly where their weaknesses lie.
There are situations that occasionally come up where thousands of points may be had for free - or even less. If carefully exploited by a few, the PTB don't know or worry. But if the few turn into the multitude, trying to earn a million points an hour, then the loopholes get plugged and accounts shut down and we all say the word that the police used when they saw their bullets hit Ned Kelly and bounce off.
Especially those who put a lot of time and talent, sometimes risking money and accounts, to find these nifty tricks.
A recent example is the disappearance of F/JASA fares from the website. Sure, they are still around, but you've got to go through a Qantas staffer now, and the harvest isn't quite so bountiful as it once was. There are other golden opportunities now vanished.
Don't talk about the bus.