Everything everyone else said is right, but I do see this as being an edge case.

You (i.e. your System 1) anticipates some kind of excitement from reading or being involved in an online quarrel. I found myself drawn into one recently, and when I unpacked my feelings I realized a large component of my impulse originated in a desire to look smart. Of course, in the moment, you are feeling a strong and probably complex impulse, and don't have the time or inclination to name all the components of that compulsion.

To my mind, it does fall into the same family of cognitive glitches as biases, because it's a powerful, fast, automatic response which is usually wrong, i.e. usually just wastes your resources and leaves you feeling bad.