At least they are not trying to hide it.

It is ironic and sort of funny, but don't you think they probably cleared the shelves behind them so they don't accidentally endorse anything?

Then you find a Different place to take the Picture ...

Clearing out a 4'+ section of Grocery shelves is Neither easy nor fun (certainly not something you'd want to do for a photo-op)

There's another, wider shot of the same scene with visible products (products Clearly 'faced' to make those sections look full at first glance)

yep