See https://asahilinux.org/2024/01/fedora-asahi-new/#speakers

The effect is understated there, perhaps because Apple speakers are actually somewhat usable without this feature. For the X13s, the speakers might as well not exist in the current state on Linux.

Complexity in the name of cost cutting. A hardware power limiter based on temperature would cost... $1? A thermal pipe from speakers to case acting as a radiator would be... $5?