This seems like a good idea to me. If management were more firm in their commitment to maintaining some kind of order in their dining rooms, would adults only hours and/or sections be necessary? After reading this thread and the one that was closed recently, it seems very clear that the majority of the upset here is over poorly behaved children and not the presence of children in general. And that they realize that unexpected tantrums occasionally, and are accepting of them so long as the parents handle the situation adequately. Management should be impowered to removed unruly diners, but child and adult alike. No one should have the right to ruin the experience of everyone else present.
I really don't get this "Disney is for kids so you must be expected to tolerate obnoxious behavior from children" mentality. To be sure, Disney does attract millions of families ever year, but it was my impression that opening restaurants like Citricos or Yachtman's Steakhouse was a subtle move on their part to create restaurants that would appeal to adults and give them a spot to relax and enjoy themselves after long, nosy days at the parts. I mean, there's nothing really about them that directly markets at families apart from their location (I mean, how often is it the child begging to eat there?), but I don't think their location enough justifies the assumption that it was intended to be yet another family dining experience. Disney recognizes that they have an adult market, not only from the singles, college kids, business people and empty nesters that travel there without kids, but for the parents who have brought their children there for a vacation but want to enjoy a night out on their own too. Why else have all of the babysitting services? Surely people can't think V&A (which is sadly out of the budget for a lot of us!) was provided by Disney as the only outlet for that. No these restaurants don't have age limits or restricted areas to keep kids out, but neither do most nice restaurants in our home towns. It's just expected that adults who bring their children to them will recognize what kind of establishment they're in and only bring their kids if they can be trusted to behave like tiny adults, and if they don't, to make other arrangements that don't avoid making a scene in the dining room.
The view that Disney is for kids and only kids and thus just about anything a kid can do should command toleration from the rest of us seems incredibly myopic. But then, I *am* just a childless college student who's planning her first ever trip to WDW without her parents and sibling after having been away from her favorite vacation destination for the better part of a decade. What do I know?