I think the low rental prices are the result of several factors.
Don't forget that international travel has pretty much tanked over the last couple of years, for various reasons, some of it is political, some of it logistical...I know I was surprised how much US domestic airfare is up over last year, and how many fewer convenient flights there are.
Inflation and the cost of living has risen, and wages have not kept up with that. People have less disposable income to use for travel and recreation. They are busy keeping a roof over their heads and food on the table.
Credit card interest has gotten ridiculously high. Home insurance and property taxes seem to be at all time highs.
Disney prices, overall, are up...and some vloggers seem to focus on everything that may be wrong with Disney, instead of the things they get right.
As far as OKW, it isn't what I'd call an "in demand" resort. People want the latest and greatest. OKW is the oldest resort in the system, plus it has only 3 buildings with elevators.
There is a LOT of construction at Disney right now.
Universal has added a new park, people may be taking a break from Disney to go see what's new. We've seen that happen before, when Islands of Adventure opened, and when the Harry Potter attractions opened.
Disney has a "free" dining promotion for kids as part of a package.
All of that means a slump in demand for
DVC Rentals.
I don't think all that many of us that purchased in the early 1990s really thought about a rental market for our points. I know I've only rented out points twice, and really didn;t buy more points that we'd use in a normal year. Though now with fewer friends and family that have the $ to travel, or that are having health issues and aren't able to travel, I have a small surplus. But now, for solo trips, I don't feel "guilty" getting a one bedroom unit at OKW just for me!
The good thing about buying in the early 1990s, is we paid a lot less per point for the initial buy in. Imagine paying $200+ per point, adding dues, and living with today's rental prices.