They actually talked to the California Grocers Association, and quoted the CEOs of Albertson's, the nation's largest supermarket company; and Conagra, one of the largest food companies on the planet. Not exactly anecdotes. These are people with access to real data.

I haven't seen any, myself.

I've seen it.

I have a regular bi-weekly list, and a lot of the items are getting harder and harder to find.

I have to try two or three stores, and even supplementing with Amazon Fresh, I still can't get everything.

Two of the chain supermarkets near me have signs up apologizing for the empty shelves, saying they're stocking them as quickly as they can. Which tells me this is a staffing issue, not a supply issue.