Well, there have always been problems with Choice Rewards because: 1) the program often seems unprofessionally run and they publish basically nothing on award categories; and 2) the bloggers don't really keep track of it, so there isn't really any data on devaluation and such.
That said, there's obviously something rotten here. It was just a few years ago when they added the 30K category and now run-of-the-mill roadside motels are in it.
I didn't get to buy more points in the last Discover America promo (I was flying at the time) and now I think that may have been a good thing. The points are definitely worth materially less than they were even a year or two ago. It's become kind of random whether the points are useful. When I look for an award, I can't even guess what the redemption level is going to be these days.