We saw a mass exodus from CB/upper channels to the ham bands when the code requirement was eliminated in 2005. For a few years, we got a lot of requests to put 10-meter coverage back into HF transceivers that had been moved to 11 meters.
Just a little comical, since we had done the 11-meter conversion to some of the ham HF radios that were coming in for that. Sunspot activity was on the upswing, and the HF channels above 40 seemed to lose population as the SSB operators went to the ham bands.
Once they found out that the ham bands were now filling up with 11-meter refugees with code-free licenses we saw what I called "slosh".
Disillusioned hams going back to 11 meters.
But not that many, really.
I don't know quite how you could do any kind of "census" count. No contest weekends on CB to boost the head count.
What I'm waiting for is the day that the very last ham who was NEVER on 11 meters finally becomes a silent key. When I was a young whippersnapper on the radio 50 years ago, the old guys had no respect for CB operators, and still held a grudge over losing the 11-meter band. But at the time it had only been ten years, so plenty of hams were still sore about it.
Sooner or later the last one of those will be gone, and EVERY SINGLE licensed ham will have either started out on CB, or had one in a family car at some time.
Not sure attitudes will change when that happens, but I'd still like to know when that very, last ham who never touched a CB mike finally snuffs it.
The "old guys" on the ham radio 50 years ago are all pretty well gone now. Many of my "radio hoodlum" buddies from the 60s and 70s are still active hams.
Now we're the "old guys" on the radio. Kinda hard to get us aggravated though. We know all the tricks.
We still call ourselves the "Rotten Radio Club". And yes, we have a club call sign W4MRF.
And yeah, every one of us was on CB when we were young. Sure could cause some hate and discontent with a ham radio on the CB back then.
73