Value isn’t necessarily something tangible. It’s what other people think it’s worth. The USD doesn’t have any more value than the belief people put in it. Do you also think it has no value?

I’m not defending crypto speculation, but it’s ignorant to say it doesn’t have value if you can buy things with it. Basically all modern money is based on faith, including crypto. Even when it’s based on gold or silver, that’s aren’t actually useful for most people so it’s still made up value worth however much people value that.