> we don't know why we sleep

Garbage collection, for one thing. Transfer from short-term to long-term memory is another. There's undoubtedly more processes optimized for or through sleep.

"Our brains are governed by physics": true

"This statistical model is governed by physics": true

"This statistical model is like our brain": what? no

You don't gotta believe in magic or souls or whatever to know that brains are much much much much much much much much more complex than a pile of statistics. This is like saying "oh we'll just put AI data centers on the moon". You people have zero sense of scale lol