But when people say things like "capitalism has no need for X", what they are bemoaning is that the bulk of the market is choosing different tradeoffs.
You can still buy highly durable drinking glasses, it's just that the cost of producing these glasses isn't worth the additional durability for most people - so they are a niche product. You wont find them in the average restaurant, for example.
There is no need to make this about capitalism versus communism, it's about market-based solutions versus solutions by a party dictatorship. Anti-smoking campaigns and autobahns are fantastic, but we don't (I hope) ascribe good roads and public health to fascism. The point being, when you have a party dictatorship that controls the economy and can direct it by political aims, you can snap your fingers and say "I want unbreakable shot glasses", and you will get it done. That's the advantage of totalitarian control, and there are many, many people who are led by their inner totalitarian. These are the ones genuinely upset that their neighbors are making different trade-offs. For them, it's not that they can't buy durable glasses, but that someone, somewhere, is allowed to buy cheap glasses. That is what bothers them. These are the people who must never again be given power in society.
I hope that we all understand that when comparing totalitarian systems rather than market-driven systems, the yardstick of comparison should be the overall effects on efficiency and freedom, not whether people are free to make their own choices for glassware, or even free to make bad choices.