Sadly? MOST "Discounts" are no longer "general discounts". They apply to certain resorts, certain days.
WDW Discounts are no longer anything like they were, a few years ago. They are VERY hard to navigate, and actually use. And the "discounts" have become pathetic

.
Dear wife and I saw this evolution, about 6 years ago. Then? We hunted and lurked. It started to get old.
TODAY? We are DVC Owners. Having hit Breakeven, vs Discount Price (I have a 6 year spreadsheet)... Our real cost, per night, at BRV, is now about $130.
So - humbly suggest.... DVC IS the real discount. $130/night just seems to be far better than (about) $400/night in rental rooms at the WL. Yes, to WIN, you DO have to have two things:
1) CASH - never finance.
2) A willingness to GO to WDW, at least once per year.
All personal opinion - I'm not necessarily right, no one else is necessarily wrong. This is just OUR experience. Others should do as they desire.