I'll get away from Pinsir. But, I will make a concluding statement. It's funny that you guys say the meta is over prepared for him and then proceed to talk about its set up sweeping ability, like it will last a turn against things like Gren or Lando T, both on teams very commonly.
I will stress the point that Pinsir has good Attack and Speed, but even then, check the flaws right now. Get it into your skull. It's ability is great, but it's forced (a little forced) to run Jolly cause things can speed creep it. It now loses on that Nature boost. Also, it's saddening typing really cripples it, weak to common moves. Also, frail. You would think 120 Def is good, but it's HP does not support it. Sure, it can setup on an innocent Chansey, but let me tell you a secret; you guys overrexagerate it's power. It's still has 105 speed. Believe it or not, a +2 Quick Attack doesn't even 100% KO Greninja, which is pathetic. Finally, the meta isn't in his favor. He doesn't like anything faster than it (fast sweepers are popular right now, but not HO) and forces it to die or switch out. Even then, it should stay at A+ because all of the A ranks just suck. It has no purpose there. If better pokemon were there, it would probably be A, but probably not.
All in all,
Flamer got it pretty well on the nail, too.