Nope, thats not the point I was trying to make.

What if you weren't making a chair, but a hammock. They can both do the same thing, but are very different approaches and requirements.

Same with websites. They are a medium for conveying information. You don't need (traditional) websites or apps to do that. I can even ask for information and receive information completely independently of a website.

The only reason devs need to care about all these things is because of the medium being used.