The idea that date flexibility opposes the benefits of off-season travel overlooks the economic reality for many people.
If we hadn't already invested in the idea of traveling on specific dates, would we choose not to take advantage of lower prices in the off-season?
For most, traveling when prices are low isn't opposition; it's a necessary strategy to make the trip affordable, for example, a 400 flight in October instead of 1200 in July for the same destination.
We need to look at the situation with fresh eyes: for many, the off-season isn't a secondary choice but the only way to travel.