CHR's last (in my opinion) real lowpoint was in the mid-1990s when Bonnie Raitt, Bryan Adams and Elton John were hitting the pop charts. That's about the time the alternative format came to be. The CHR thinkers of that time weren't exactly distinguishing themselves from ACs of the time, in my opinion. I don't know which "last doldrum" you're thinking back to, though; in my recent memory, CHR music's gone from a little rock-leaning to a little urban-leaning, but I don't really recall a stretch where the format languished in one direction for too long.
To me, though, that's the beauty of the format. Whatever a "hit" is, it fits the format. Alternative, pop, rhythm, dance, urban, heck, even country... if it's a hit, it's CHR product.
You'll get no argument from me, though, when it comes to outta town jocks pretending to be "WXXX" jocks hanging around "WXXX's" market.