Well it obviously has changed and this article is testament to that. As women grow more financially independent they too can enjoy the socially acceptable unions that were the dominion of men for centuries. This fact seems to make some men crazy.
Personally, I find all the anti-Dowd postings of Catherine Zeta Jones funny. But I don't work my self up into a frenzy because she married the Crypt Keeper. Like many other younger women she hitched herself to a wealthy, powerful man. Now if some men want to believe that younger woman love them for "themselves" and don't notice their aging flesh and are oblivious to their financial assets, God bless their delusional souls.
I'm sure Keaton and Reeves will be able to figure out what works for them without outside advise.
Oh, and while human circumstances DO change, human nature doesn't. If you don't believe me, read St. Augustine (either the "Confessions" or "City of God"), and then try to tell me that people are any different today than they were 1600 years ago.