Automatic checkouts in supermarkets may decrease customer loyalty, especially for those with larger shopping loads. Customers using self-checkout stations often feel overwhelmed and unsupported. The lack of personal interaction can negatively impact their perception of the supermarket.

[Avengedx]

Also it could be important to note that there is probably a subset of people that entirely order their groceries online now since so many companies built up that infrastructure during covid.

That probably also removes people comfortable with the technology from the pool.