That's certainly the myth they want you to believe, heh.  In practice, they aren't making shopping easier for anyone but themselves.  They're just reducing their level of bureaucracy and paperwork, along with other administrative costs, by getting software to do the record-keeping for them in real-time.  That's all these companies care about.  Chances are, you won't even be able to see their blockchain.  The average consumer won't notice any difference at all.

The average employee, however, might well notice if their role entails administrative or auditing duties.  They're soon to be out of a job, sadly.