I think this has to be tempered with an understanding that it is actually possible to improve things and create better systems. It's probably good to be skeptic

I think this has to be tempered with an understanding that it is actually possible to improve things and create better systems. It's probably good to be skeptical of claims that whatever new thing comes along is inherently better, but it doesn't seem helpful to assert up-front that something better than the unix shell can't/won't be developed in our lifetime.