So the problem with your fridge example is that if the product was as bad as you say, nobody would buy it and thus there is no risk of a monopoly. If the product is so good that everyone wants it, there goes the rest of your pro-consumer argument.

This whole argument is a neat trick, as you smuggle bad outcomes into a situation where there aren't any by pretending that everyone wants to buy the horrible product.

If you want to make a case that monopolies that arise from consumers overwhelmingly choosing a preferential product are bad, go ahead, but don't construct an impossible scenario where everyone loses their minds and buys a product that provides purely negative value to them just cuz.