I agree with this. However, when is enough enough? What if everyone decided to self extend? Or what happens if they decide to stay a few more days? Nothing happens? Gee, maybe more of us should try it and see what happens!
Well, they aren't free stay extensions. The key to what I posted is that management is obligated to first contact the guest and request payment. If payment is made (no-doubt at the Rack Rates posted on the card on the back of the room's entry door), the resort apparently cannot evict. But if the guest refuses to pay, obviously Disney can take action.
DVC has been around for 15+ years and Disney has been running resort hotels for much longer than that. I'm sure this happens from time-to-time, but you just don't run into situations where people decide to arbitrarily extend their stays in great numbers. The one exception I can think of was during the hurricanes a few years back, and Disney did what they could to accommodate as many guests as possible.
Even in the report that started this post, OP wasn't turned-away by the front desk. She did get a room--it just wasn't the room the resort had originally earmarked for her.
Housekeeping is a mess, everyone knows that. When you ask for a kitchen towels and get bath mats, there is a problem. What is the solution and how can we get DVC to listen that we, as owner's, are tired of it and do not want to put up with the nonsense any longer?
Put it in writing. Send letters (not emails) to the DVC Member Satisfaction manager, resort manager, Jim Lewis and even Meg Crofton (prez of WDW). If you don't know the names of some of the people above, just use their titles.
Keep it short (I wouldn't go over a single page) and mention specific CMs by name whenever possible. I also think it helps to mention a couple of positive interactions with Disney staff to avoid being characterized as a crackpot who just wants to complain.

Making a point to attend the Condo Association meetings in November / December is also helpful. That's one of the few forums in which members are given the ability to openly voice their concerns and question DVC management.