Here's the thing though... it isn't factually incorrect, and taken together with how Ethan Peck has played the character, this line could just be viewed as Spock's attempt at a joke.
What people don't realize is that this was actually said very sarcastically. The problem is it's so hard to read vulcans no one on Enterprise realized it at the time. For another example of this vulcan sass I give you T'Lyn whose emotional outbursts got her kicked off her vulcan vessel.
kicking her off the ship for emotional outbursts that... saved the ship. logic, huh? honestly i got the sense that she wasn't really emotional even by vulcan standards, she was just smarter than everyone else on that ship. they berated her constantly for it until she finally gave a sarcastic reply so that they could give her the boot