Use of the term "alsa" is confusing here because ALSA refers to both the kernel interface in /dev and the userspace API in alsalib. The ALSA userspace API is mo

Use of the term "alsa" is confusing here because ALSA refers to both the kernel interface in /dev and the userspace API in alsalib. The ALSA userspace API is mostly not relevant to applications, new apps probably will not target that and will instead target Pulse, Jack or Pipewire. Of course, Pulse, Jack and Pipewire still use the ALSA kernel API internally, and do implement compatibility for its userspace API just so that older applications still work. You're correct that XWayland is likely not going away any time soon but I would suggest avoiding it if you can, it's only for compatibility with legacy apps. It still has some of the same security issues as Xorg but they're confined only to other concurrently-run XWayland apps.