Ardour is very good and needs more attentions. My respects to the developers, I use it every day, and I am very happy with it and its community. I also like the paying / open source model, and I wouldn’t change it for a proprietary DAW 99% of the musicians use.
I use that CMS since 5 years after a Wordpress burnout, and it has been a very joy to learn and use that CMS. The many websites I developed with Processwire are still in good shape today, and my clients usually find it very simple to use.
You know all those icons because someone, some industry or some culture imposed it to you. Nothing is self-evident. We are constantly learning new symbols to be able to share graphic languages with other persons or interfaces.