Right, but that's like saying "people don't care about how a company treats workers", "people don't care about privacy" -- speculators/shareholders occupy the most craven beliefs in all markets generally.
Decentralization is an _ethos_ that _can be found_ in crypto but you have to look for it, which means you care about it. If you don't care, fine, don't bother with it.
Meanwhile decentralization is actually an excellent measurement of the honesty of a given crypto scheme, and surprise surprise, only a few projects are willing to put decentralization before profits. But they do exist, just like there are a few tech cos that aren't extractive ad machines (not many).