I truly don't have a problem with age differences, as long as both are consenting adults.
Don't get me wrong, I feel that it's taking advantage of a "girl" if an old man scoops up an 18 year old, but we have to draw the line somewhere. So consenting adults defined by the laws of the land is good for me.
But for a Governing Body member to find a younger woman, even in her thirties, shows members that he is still thinking physically. He's supposed to have the heavenly calling because he is ready to give up on a physical life.
It's going to cause some problems in HQ, but it will probably be just a hiccup. Some will feel that these guys are just a bunch of hypocrites (I do) but others will just think of how this will be no big deal when he leaves for heaven.