I think you may have misunderstood what Ilandar was saying, but I'm not exactly sure how, because I don't know which type of scan & go you're talking about.

Part of this stems from the fact that there are two types of scan & go. The older, superior (IMO, and theirs) option of scanning with your phone, tapping a few buttons to pay on your phone, and walk out. Then there's what they're replacing that with, which is dedicated tablets that sit in the trolley.

Ilandar was talking about how, if you're using a trolley anyway, there's basically no difference (except that, going forward, you'll have to pay at the gate, not on your phone—this is true even where Scan&Go mobile is sticking around). But if you're only grabbing a couple of items, you now have to get a big cumbersome trolley anyway, or choose to go the old-school method of self checkout.

I probably do a majority of my shops either by hand or with a basket. 1–15 items or so, depending on their size. But by hand or a basket can't do scan & go, anymore.