Why is the resume still even a thing?

Literally do not (and have not ever) understand the basic resume. Why is this still a thing? In the era of LinkedIn, which is apparently worth $26 billion but has essentially no value, why are we still evaluating people off the basic resume? I’m confused.

Then I run into articles like this one about how “leading companies build the workforce they need” (buzzword alert) and I see quotes like this:

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