Glibc change exposing bugs

It's not so much that ALSA is easy to misuse (although it probably is), it's that certain parts of it are impossible to emulate from userspace. An app that actually NEEDS those parts is NOT misusing the API when it uses them (for example, pulseaudio itself uses those bits).

The problem is that most apps don't actually need the those bits, so they just needlessly break software like pulseaudio (and also break on bluetooth audio too).

Pulseaudio does use those unemulatable APIs, but it also falls back if they don't work, and it has good reasons to use those APIs (so it can hand over large chunks of audio data, but still be able to decide it wants to change that same data later (if for example something else starts playing audio), this saves you power because pulse won't wake your CPU as much, but it also uses APIs that don't emulate well AND until pulse came along nobody ever tried to do that sort of thing so it broke)