The link didn't work for me PECS but I read something about this yesterday.
I feel it's another of those things that make me feel we're all doomed if this is the best we can do.
Of course shop staff talk to children, especially if they're measuring their feet. That's what happened when my grannie took me to Clarks 68 years ago to have my feet measured for shoes, Romping Robins I think they were called.
I recently took our two toddlers to Clarks, following on the family tradition of grannie buying the shoes, getting them properly fitted and so on. The young woman who served us was lovely with the children, chatted to them and was patient when they wriggled about. That's how it should be, not part of some cheapskate government initiative.