The word human (usually) refer to all members of the Homo genus. The name Homo sapiens means 'wise man'. Except for the clever use of thumbs our genus successfully managed to apply logic consistently in order to survive. Human reasoning produced tools, technology and science.
So, no, it doesn't say it in the name. We occasionally are dumb, or make dumb comments, but the expectations are high.
So it's understandable why dumb humans would expect to replace workers with AI --- which struggles with basic math and reasoning, has zero real world experience and can't tell fact from fiction?
I think people make comments on LLMs not being smart in reaction to the comments from the leaders of AI labs that LLMs are so smart they could/will lead to mass unemployment.