How is bitcoin technology outdated?

You have to understand that bitcoin only aims to be a decentralized and trustless currency, and anything else would be out of the scope of the bitcoin network. What other projects are trying to do with bolckchain right now is completely irrelevant, and doesn't mean that bitcoin is outdated or useless.

Bitcoin's value comes from the fact that it's intrinsically limited in supply, and this can't be manipulated, and its decentralization. It also comes from the fact that it's the first cryptocurrency, with probably the most practicality and adoption at the moment. It's not outdated, in fact, I think we're still in the early adopter phase of things. That's why bitcoin is valuable.