Parker gets criticized when some fans think he shoots too much. Now you are criticizing because the stat is because he shoots less. Everyone should be aware--but some obviously aren't paying attention--that Parker's role this year was to gracefully give up the #1 scoring option in favor of LMA and Kwahi. If you think about it, he was still scoring a lot early on this season, because the other guys were still perfecting their new role as leaders of the offense. Then he began taking fewer shots, sometimes giving up wide open shots he could make (floaters) and passing to one of the other Big Twos. It took a lot of character for Parker to begin to give up his #1 scoring option status. And if you notice, when the team is stagnant in the 4th or behind, he has cranked up his scoring and often brought the team to a win along with the other two guys.
Nobody else has shown this year that they can be relied on as a good scoring option. I also hope his leadership will extend to the playoffs and he will step up his scoring to the level it was early in the year.