Okay I'll make one more attempt at explaining this.
1. Cash Prices are a Direct Reflection of Organic Demand
In the cash marketplace, room availability remains roughly equal throughout the year. Because supply is static, the transparent, publicly available cash prices act as the sole mechanism to balance the quantity demanded. Therefore, when cash prices rise during periods like spring break or Christmas, it is not arbitrary; it is a direct, quantifiable measurement of increased organic consumer demand for that specific timeframe. The cash price is the mathematical translation of how badly people want to travel at that time.
2. The DVC and Cash Populations Share Identical Demand Curves
There's no reason to assume that demand patterns between cash guests and points guests are anything other than homogenous. The desire to travel during holidays, school breaks, or prime weather seasons does not change simply because of the currency the guest is using to book the room. If underlying seasonal demand spikes for a cash guest, it inherently spikes for a points guest.
3. The Structural Obligation to Balance
Disney has a mandate to balance the
points charts to ensure the quantity of rooms demanded by timeshare members is equalized throughout the year. Because the points population has the exact same seasonal demand spikes as the cash population (Premise 2), the property owner must use the points chart exactly how the open market uses cash prices: raising the "cost" during peak times and lowering it during off-peak times to flatten the demand curve.