This was already posted three hours ago.

The only strong holdout is glibc (musl is no match, and doesn’t pretend to be anyway).

Chimera Linux patches musl to use mimalloc and that allegedly mostly closes the performance gap. With notable glibc stronghold systemd supporting musl in recent versions I wouldn’t be too surprised if it catches on eventually, like clang arguably already has.

This is made by an AI company (Kagi) so that checks out (although Kagi’s own logo defies the trend).