No, most of the blunders between TOS and TNG were either mistakes or lapses in memory on the part of the writers. Nothing that intentionally devours canon as in ENT and the 2009 thing.
Bullshit. One of the most egregious "deficatiing", as you put it, was the TNG+ Klingons. Klingons were never honorable warriors. The honorable warriors were the Romulans, as evidenced in Balance of Terror. Klingons were nasty, slimy thugs who farted in airlocks (just ask David Gerrold). Therefore, the deviations in Klingons from TNG onward were purposeful disregard for true Trek canon.