It's more like, as long as you're looking at quality women (that is, you've constrained yourself to all pretty good choices), it doesn't matter very much which specific one you pick.

Some people have a mental model of marriage (much like the one in the original article) in which 99.9% of the effort and return come from picking the exact right person, at which point everything just falls into place. This model is wrong and indeed harmful, as it implies the other person makes the marriage work automatically.

Instead, we say, put in a small amount of effort to make sure you're looking at a set of quality women (so don't pick up Trampy McSkanksalot at the club.) But as long as you're looking at quality women, don't worry too much about getting the exact right one; the more important optimization is how you behave yourself and how you treat her. Only a small percentage of your effort should go into the picking process; most of it should go into making sure you're a quality person and you treat whoever you mutually pick with love and respect and all those other things.

I have a fantastic marriage (to the poster you're responding to). My dad and my father-in-law, who are both very much like me, also have fantastic marriages. Our wives are all very different from each other, but they are all quality women, and we all treat them in the ways Dove originally described. If you swapped our wives' personalities, we'd all still have quality marriages for exactly those same reasons.