This is typical of most liberals. They cannot, cannot, cannot abide the fact that an opinion contrary to their own gains favor and it eats at them to the point that they do stupid things like this.
Even worse, this growing trend of “teachers” projecting their views on students instead of actually educating them is disturbing. Years ago I realized it was because teachers themselves (in general) are a stupid, uneducated and unmotivated bunch. Some exceptions, but basically they are government workers with government worker mentalities (including disdain for their employers - US).