It is!
This Nerf stopped Gurnisson from roflcoptering like a boss!
Both true and false. I gradually went more over to pike and long spear, having used more 2D polearms before.
Most 2D polearms were harshly effected by the turnrate nerf, especially the slow, long and heavy ones. The ones relying on the overhead (English Bill, Swiss Halberd and to some extend Long Maul) got hit the hardest by the change. Shorter spears and the longer pikes are still good, even though they obviously got nerfed, with the removal of floorstabbing and the reduced turnrate. They still have niches in the game though, and might've been too powerful before.
I doubt the complete removal of the turnrate would be wise at this point, as the nerf made positive, as well as negative, impact to the game. One could argue that weapons like the longest pikes, the longest hoplite spears and the dreaded great maul needed a nerf that was not just in stats, the problem is that other weapons got hit too harshly with the change.