The last I heard any substantive CB chatter was around 2014, while driving to Kentucky. Two things I recall from that trip:
1. I was able to get on the radio and ask what the source of bumper-to-bumper traffic was - it was "a chopper in the road". I figured it was CB slang for a motorcycle, but, no, this actually was a medflight helicopter in the middle of the road. So, be prepared to learn not just a language, but also context - or just use Waze, Google Maps, or your other live traffic tool of choice.
2. There is spam on the trucker channels, 17 and 19 - actual, legit spam for 10% off your next meal at Burger King at the truck stop. This accounted for a solid 20% of what I did hear, which is probably on par with the signal-to-noise ratio of e-mail.