Online free classifieds killed newspapers, which depended on up to 40% of revenue from them. I'm sure it took a slice from whatever tradio programs still existed. The internet is the new 'media'. It's replacing mass media of all kinds.
As for KUBE, I heard a liner earlier today advertising the 'old KUBE 93.3' being on their HD2, and Jubal being on 106.1. I didn't listen long enough to hear any more, being that I'd just heard of the war news. Tuned into Biden's speech on KIRO-FM instead (KUOW interrupted it with their underwriting spots). But obviously there are changes going on at 93.3.
I was a newspaper reporter/editor from 1993 until 2008, and it wasn't just Craigslist and other free online classifieds that killed newspaper revenue. Up until the mid-2000s, most newspapers still were trying to squeeze a 20% profit margin out of the business rather than investing in preparing well for the huge shift to online news and advertising. It's sad they were caught flat-footed while nearly everyone else saw the proverbial train coming straight toward them. It's also sad to see both TV and radio going through versions of the same thing now.