No need to even patch it out. It's relatively easy to change the default, rebuild the world (distros have a flow for this), and restore glibc for the tiny, tiny

No need to even patch it out. It's relatively easy to change the default, rebuild the world (distros have a flow for this), and restore glibc for the tiny, tiny handful of individual programs that actually rely on glibc debugging APIs. From a end developer perspective: I have no particular familiarity with mimalloc, but I know jemalloc has pretty extensive debugging functionality (not API compatible with glibc malloc of course).