That's a false equivalency. The USB cables I buy in random shops off the street are usually much worse, and more expensive, than any I've gotten from Amazon. And I'd wager that if you got a can of beans on Amazon it would taste perfectly fine. Maybe there is lower quality on Amazon, but comparing such different products is essentially meaningless.
Is that really a problem for things like movies and cars, though? When I watch a film, part of the fun is critically examining and discussing it afterwards. If I'm making a huge purchase like a car, I'd want to be extra-conscious about things I'm not 100% satisfied with. Sure, don't be critical about everything in life, but it has its place.
This seems to be written by the CEO of a company that provides the exact service the article describes. That doesn't necessarily invalidate it, but I'd read it more as a business pitch than an honest, unbiased opinion.
Vaccines rely on herd immunity to be effective. Even vaccinate individuals can contract a disease (or a different strain of one) if enough people are unvaccinated in the community.