It's pretty nice article but for me - just for introductory purposes. It shows how sound and digital audio works and what basic libraries and tools we have in linux to deal with sound. But I'm still stupid when it comes to details and user interface tools. The article(s) I really love to see is, on one hand, more technically detail-specific and, on the other hand, broadly defining options I can have as an end user. I mean - from basic tools (CLI, GUI) that are available for simple purposes like volume control, stream selection, etc. to pro-audio, complex scenarios. For me it's too many tools and options I can use in linux for audio and this is the reason for being lost sometime.
Of course for daily use I have pipewire with pulse, alsa and jack "plugins" which gives me seamless cooperation with lots of apps and controls but maybe I can get rid of some module or app...