PulseAudio is not a part of the signal flow of any pro-audio workflow.
True! Although likewise I'm not sure pure Alsa or JACK suit a consumer audio workflow very well. I like PA for what it is, and used for what it's for, it generally works well these days.
OTOH mentioning PA on here can be a little like poking an ants nest. :-)
Best wishes,
Neil
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Neil C Smith
Artist & Technologist