I think Abrahms even touched on this in the first film with Spock being bullied as a child for his human mother and later facing discrimination as an adult by people who would be T'Pol's peers. Spock is only one or two generations removed from ENT, and it makes sense that there's some of the lingering prejudice still there.
Quite. I suspect that the Vulcans in this early time period are just getting over their failings from the Enterprise time period.