I will never defend T'Pols actress, but her character does represent how Vulcan's saw humanity at this very early time. With Contempt and annoyance.
While I never liked that Vulcan's were portrayed as militaristic in Enterprise, it was supposedly influenced by decades, if not centuries, of Romulan infiltration. Leading to Vulcan's embracing an intentionally warped understanding of their guiding edicts due to its original meaning being lost to history. With its eventual rediscovery leading to a massive schism that nearly caused a civil war.
T'Pol character is core to this narrative of Vulcan's being caught between two worlds during this massive period of change. Militaristic conquest guided by cutting off emotions entirely and embracing cold hard logic vs. peaceful cohabitation guided by integrating and resolving said emotions to achieve a true logical mind.
Her character does warm up to humans to the point where she even wholesale abandons her people to join them. We also get a pretty interesting arc in Season 3 where she gets addicted to a material that breaks her mental conditioning and allows her to feel emotions. Its an interesting interpretation that Vulcan's cutting themselves from emotions entirely would find emotions to be almost like a drug. Obviously, not really an issue for the more modern Vulcan's who learn to deal with these emotions rather than close them off.
Its a shame the actress could never pull most of this off due to her incredible lack of talent. T'Pol could have been one of the greats of star trek in my honest opinion if her actress was better.