This is just a trick of language. There's no rule that says a priori whether an English word created before the invention of machines mimicking the behaviour, should describe the mimicry. There's no contradiction between "an airplane can 'fly'" and "a computer cannot 'reason'" because there is no reason why the two claims should relate whatsoever.

Well, but we do we have these words, and they are useful. An airplane and a bird both travel through the air. A human and an LLM both make logical deductions.

You can just look at the definitions and see whether they apply.

The relevant MW definition for "reasoning" is: "the use of reason, especially: the drawing of inferences or conclusions through the use of reason."

And "reason" is: "the power of comprehending, inferring, or thinking especially in orderly rational ways."

Functionally speaking, i.e. in terms of observable behavior, LLMs exhibit comprehension, inferring, and reasoning. If someone wants to object to that, they'd need to explain what relevant property prevents a conclusion drawn by an LLM from being counted as involving reasoning.