Those "basic signals of the web" are useless to the user. They carry no meaningful information for them. You don't need to learn about the Dewey decimal system

Those "basic signals of the web" are useless to the user. They carry no meaningful information for them. You don't need to learn about the Dewey decimal system when reading books, either. For the same reason - it's helpful for finding things, it allows you to classify books, and it doesn't matter at all since there are better ways to find books now.