I'm a materialist and it's not that I think there's something magical about biological wetware but your refusal to acknowledge the manifest differences between a bird and an airplane ("they both fly! what's the practical difference!?") marks you as an unserious thinker on this subject.
You might start here https://aeon.co/essays/your-brain-does-not-process-informati...
Carefully prompted LLMs and humans are now difficult to distinguish over a text channel (Turing test).
Your article claims that this shouldn't be possible, because according its author, humans are incapable of developing the necessary "lexicon". Literally, the author states:
>But here is what we are not born with: information, data, rules, software, knowledge, lexicons, representations, algorithms, programs, models, memories, images, processors, subroutines, encoders, decoders, symbols, or buffers – design elements that allow digital computers to behave somewhat intelligently. Not only are we not born with such things, we also don’t develop them – ever.
(emphasis mine)
In other words, that author claims that humans never develop lexicons! I'm inclined to say that makes them an unserious thinker. (Note: I believe that this article has many issues, but instead of going through it carefully I just chose to highlight a single issue that seemed especially vivid to save time.)
Why is the text channel relevant? It helps us isolate the cognitive capabilities of the system. Imagine a bird and a model plane which had identical flight performance in terms of various specs: top speed, acceleration, banking, etc. Under the hood, the bird and the model plane could work very differently. From a practical perspective, it might not matter.