Because referees have been doing that all season long. The six again was the dumbest rule to be introduced, but the PVL sycophants (particularly in the media) won't admit that fact.
I think theres a place for the 6 again & its been a good addition to the spectacle .. it has eliminated a lot of the wrestle in the ruck & sped up the game to a good level. TV ratings prove people are enjoying the contests. When we didn't have it & we had a lot of slowing down tactics some games were very stop start & disjointed .. with play not recommencing for up to 60 seconds in some instances after a referee gave a penalty that he now gives a 6 again for.
Whats happened now is coaches are challenging the rule & how to exploit it
first it was the constant conceding of 6 agains when teams were working off their line or in yardage to sap energy out of the ball carrying side ...that was fixed
Its now a penalty inside the 40m for a team with the ball ... its worked. Teams don't want to piggy back sides out
now its teams willing to lay on in tackles over & over knowing they can't get hurt via a penalty & 2 points.
Just a few extra tackles to be made & thats it or in the case of today , no extra tackles because there was only time for 6 anyway ... even tho the dragons were ahead by only 2 points they knew there was no deterrent to not lie slow every ruck down .. concede a few 6 agains ( who cares , they're pointless & of no use to the raiders there )
Klein showed the way with a penalty & sin bin in the origin for repeated infringements in the ruck
Referees need to be able to adjust & use their discretion when its required & even just knowing that they could , the Dragons would have been quicker in those last few rucks.
It was a poor look for the game
so the next adjustment to the 6 again is required