It should be noted that the photographs that the news outlets use in the articles about supermarket shortages are mostly from last year. It's deceptive.
Still, there are shortages. For example, my local supermarket has for a month or so had signs explaining that "Supply difficulties" may mean some items aren't in stock, e.g. most of the Italian ready meals section (I like Italian and I'm lazy) is replaced by an incongruous display of Italian wine, even though the wine section is actually on the far side of the store.
They are clearly struggling. And even if Brexit is only 10% of the problem, they run into the fact that it's key to central government policy to portray Brexit as successful, and so you mustn't mention that element.
I dunno, this site probably disproportionately represents the kind of demographic who just orders all their groceries on Amazon Fresh and hasn't set foot in a grocery store in months anyways. Maybe some people do need photos.
They are clearly struggling. And even if Brexit is only 10% of the problem, they run into the fact that it's key to central government policy to portray Brexit as successful, and so you mustn't mention that element.