Yes, all grandchildren are created equal. I doubt that the HOA in this particular story is going to have a breakout of motherless grandchildren because this unfortunate set of grandparents did. How long is long enough? I'd say until their home sells. I could understand the outrage if these people were refusing to sell their home, but they're not refusing to do so. They've even dropped the price on their home. What more do people want? Do you actually think these people should just give their home away? Walk out, close the door and be homeless themselves?
If I lived in that HOA, I would do everything I could to help these people sell their home, and I'd even babysit for them. Kindness doesn't cost a penny, and the results can be miraculous. :)
So what if their home never sells. If a family with kids moves into the neighborhood, how long do they have to sell their new home? I mean it seems unfair to let one family have kids but deny another family that right
Which begs another question: Should people be allowed to live in neighborhoods where there are no children?