On the off case that there is an "unusually high volume of tickets" for a specific route where LM seems to be bleeidng cash (paying more than they expected), then LM might be inclined to inspect the problem and resolve it. I speculate that this is what happened to the ex. Australia pricing being higher.
But generally, as @
SMK77 said, LM seems to be making more money ouf of the program, and isn't driven to devalue/close the loopholes.
An operating carriers might flag Avianca tickets (202-) in the rare cases that there is an "unusually high volume of strange routing tickets" for a specific route.
The GUM route on UA is a little differently (long story not remembered fondly by many on this forum), but I speculate the KHV route on OZ died this way.
So, operating carriers generally dont care as long as it is ticketed and "OK to fly" status.