Prepare for moving goalposts. In 50 years people will still doubt that AI can create anything novel and worthwhile, while they are going to rely mostly on the things that didn't exist before AI, in nutrition, medicine, technology, communication, entertainment. They will see them as, normal, common and simple extensions of the previous developments, pushed mindlessly a bit forward by stochastic parrots.
Claiming that AI will be valuable in 50 years is you moving the goalposts back 50 years. It’s a strawman argument, no one is saying it won’t be valuable in 50 years
They're saying it's obviously valuable and useful now, but some people absolutely refuse to acknowledge it. And in 50 years, there will still be a contingent who insists that AI is useless garbage, even as it's responsible for creating and maintaining every aspect of their daily lives.