I really think the writers were trying to make the Vulcans be haughty, disrespectful and petty. The two species did not have the same relationship as they did in TOS; one of mutual respect.
Everyone needs to watch Amok Time again. T'Pau, she takes no prisoners.
And Sarek isn't exactly getting off any high horses in Journey to Babel.
Agreed. There was a "softening" of the Vulcans, but it was not between ENT and TOS... it was between TOS and TNG. Somehow by the 24th century they were reduced to quiet, introverted background characters with only a hint of their previous smugness.