First, Walt had a great idea, but the man is worm food, and has been for over 60 years.
Second, there are numerous resorts even in WDW that have bars. The contemporary the original of WDW resorts has a bars plural, both inside and serving the pool, the Poly has a bar, Yacht club has bars, as do every single park. This isn't new, this isn't ground shattering changing for WDW and its pretty moronic to argue the addition of a single small bar at a hotel resort, that already has 3 other bars (Beaches Bar and Grill, the Courtyard Bar, and Enchanted Rose), on the property is "neutering everything that makes WDW special."
And of course Third, these bar locations are not sitting empty. While not acceptable to you personally, apparently the people who are going to WDW find it acceptably, because WDW is building these types of offerings and their guests are using them.