I find the whole discussion repetitive and increasingly uninteresting but your post is a bit of an overreaction, and unfair.
Yeah, well, that's one of the collateral effects of always bringing up the same old talking points: you'll get the same old answers.
So although the poster you cited is not completely right in my opinion, you are even less in your answer. The state of discussion remains; some want 4, some want more, each side has arguments.
Oh, but this is the easiest argument to retort:
A hard cap to six characters allow both groups to be satisfied and play how they want, while a cap to four simply does not.