the mention of "Atomic SPK Base Some IO conflict with ATOM Matrix's built-in hardware, so Atomic SPK Base is only applicable to ATOM LITE/ATOMS3 LITE"'.

What exactly the IO conflict ? (what can and cannot be done?) and what about ATOMS3 non-lite, would that work?

Comparing
https://shop.m5stack.com/products/atoms3-lite-esp32s3-dev-kit
and
https://shop.m5stack.com/products/atoms3-dev-kit-w-0-85-inch-screen

Both devices seem to have the same ESP variant the same IO pins, thus I could expect both to work fine.

Thanks for your guidance!