I think the best way to address little things like this is with the sort of social judo that Aldi does. It'd be great if this wasn't needed, but here we are.
In the past, when stores did not have self-checkout and there were 0.5 or more baggers per cashier, it would be easy to have a bagger assist in loading your purchases into the car (and then returning the cart for you). Minimally-staffed locations like Aldi make than an effectively-impossible ask.