Vulcans have TOO MUCH emotion, that they had to take extreme measures with their cultural conditioning to prevent self-destruction

This is correct. When Spock's father started mentally breaking down the first time anyone really noticed is when he cried at Data's concert performance, and it was one tear, not an outburst. That one simple break in discipline instantly told everyone that something was wrong with the guy.

For all of Jar Jar's faults at lease he understood that aspect of Vulcans.