Spencer is a victim of more than that. He's a victim of his own young, dumb head at this time. Since he is young, the young dumb head is not an unforseeable possibility, and there is a chance time will cure it. But he:
1) appears to have this idea he knows it all
2) appears convinced he is going to revolutionize the game and play it in a way nobody else ever has
3) views his post game not as a dominant defining weapon, but rather as a mere mismatch weapon to take advantage of an opposing weakness.
The first two are why the third still persists, but the end result remains that I ratehr suspect that Spencer would argue that he is just being smart when he runs away from strong post players and chucks up outside shots. He is tailoring his offense to attack the other guy's weakness he would tell you. Post up little guys, chuck threes vs. big guys, have analysts gushing over his versatility and asking for his autograph, and to complete his fantasy picture, make out with starry-eyed adoring dance team members during the timeouts.
But that's not what dominance is about. Dominance is not about taking what you are given, it is about taking what you want whether the other guy wants you to have it or not. Teams never have to adjust to Spencer, because he adjusts to them. And so Spencer as victim of some nasty group of nameless Kings players who won't pass to him in the post doesn't fly quite straight. There are issues there. But those nasty nameless players can't even trust Spencer to BE in the post in the first place. And the blame there lies squarely at Spencer's feet, or rather in Spencer's head. The day he quits screwing around, starts running to the post and demanding the ball, not when the other team allows him too, not when he feels like it, but every time down the floor, is the day when his lack of post opportunities will become the responsibility of his teammates. Right now one play he wants it in the post, the next he does not, then he's out at the three point line, now he thinks he's a PG...you never know. Those nasty nameless guys are probably thinking so this guy who has been farting around all over the floor suddenly gets a hankering to get the ball in the post, and its time to stop everything because we are so blessed?
Spencer needs to become a rock that his teammates can depend on and know where he is going to be, not a leaf fluttering about according to whichever way the wind is blowing. Then the consistent post feeds, and consistent post game, will come.