No one has been "hostile" towards you personally that I can see, they simply disagree with your position on the DDP being available on non-DVC stays, and have listed the reasons why it is not. Remember, as CarolMN said, it is a trade, just like any other non-DVC trade and it isn't even guaranteed that we'll always have the ability to stay at regular WDW hotels on points, no matter what the cost. The rooms are "owned" by Disney, not DVC members, and Disney/Disney Travel sets the rules...everyone should realize that when they trade out. It is made clear on the DVC Member website"
"Disney Dining Plan Now Available to Members
Members can now enjoy the Disney Dining Plan when staying at a Disney Vacation Club Resort at the Walt Disney World® Resort on or after April 1 (this excludes Disney's Hilton Head Island Resort and Disney's Vero Beach Resort). Important Note: The Disney Dining Plan must be booked in advance of arrival and must be purchased for your entire travel party (ages 3 and over) for your entire length of stay. Call Member Services to add it to your reservation or to make a new reservation today."
Note: Bold type above is in context and a direct paste from the DVC member website.
Hopefully, DVC members would take the time to familiarize themselves with the rules prior to booking non-DVC ressies on points.