Does pride prevent you from learning three buttons and two differences between Light and SoD in fifteen minutes?
It's not pride here, but a desire to climb higher in the hierarchy, even by reducing competition. And it is precisely a crystal-clear SoD + CM combination that allows this goal to be achieved - because many strong players avoid this combination.
So, what would you do if you were faced with two options: either compete in a simplified lineup for a chance to win, or almost certainly get nothing. You would probably praise your own "swamp" with all your might.
It's much simpler :).
To confirm this thought, pay attention to those SoD players who are willing to play Light or even Full. Usually, these are those who are at a higher level and can more or less compete even with top TE players. The correlation is not strict, but it is clearly visible.