Economics is a tool, and yes of course you can get different conclusions based on different assumptions. Doesn’t mean economics is bad, just means it is being used in different ways and for different purposes. Same with statistics. assumpsions are important.
They have stopped doing that in Norway, at least here. Not sure if it was a corona effect or if they thought it wasnt worth it in terms of customers either shopping somewhere else or shopping less because they take a small shopping basket instead.