There's no reason to mention this article, except after I read it, I had the burning desire to say to someone, anyone, "Duh! Why do you think 90% percent of dates involve men taking women out to dinner? The man is proving he can provide for a mate and offspring!"
I don't care what anybody says: we're all animals at our core. Being human means you have evolved a superego to make up lies to disguise the fact that you're driven by your id.
And that's exactly the reason I always insisted on going dutch, during the early phases of dating someone. Although in retrospect that may have backfired, since I tended to end up with guys who wanted to be taken care of.
It's a delicate and difficult thing, balance of power.