I said it pre-patch and I'm saying it post-patch. The nerfs are barely noticeable and It hasn't impacted the Hellcats still stunning performance. If your being killed because you cannot transverse fast enough then you're engaging at too closer range, you need to adjust your strategy.
Because the turret traverse is so artificially (read:nerfed)slow that you often need to traverse the hull.
You cannot always be where you do not need hull traverse and low dispersion. It just does not work that way. Sometimes you are the only one capable of relocating to rescue a falling flank.
Sure, maybe you can "always" have a strategy that prevents you from needing rapid traverse to track a target. It just might also prevent you from having a chance to win. That's not really a great strategy.
It's a bogus, unnecessary nerf on a vehicle that was already artificially handicapped due to their insistence it be forced into a role it was not designed for. Mobility and agility is the only reason a Hellcat exists.
Nerfing the mobility and agility of the Hellcat is the same as continually nerfing the dispersion on the T30 and removing the vertical stabilizer it actually came with. It is done for two reasons.
A. Because people refuse to learn how to fight against them.
B. Because they try to force them into roles they were not designed for, due to their inability to grasp basic armored warfare.