I disagree-- it would appear to be exactly the opposite if you look at current design trends (checkout dribbble.com), cards look to be a very big yes-yes in the design community. I believe googles implementation of the cards within Google+ very poor UX. If they made each card the same height so your eyes can move about the page more orderly it might make Google+ more palatable. You are right in that it is very hard to digest the content with that design.