I think this is a filter bubble thing. Considering the difference in the time of the posts, I'd say the user base that was previously commenting was mainly from the USA where Apple is king and has its own bubble. Around the world it might be different.
A lot of it has to do with the perceived elite nature of the MacOS platform for Audio/Video in comparison with other systems.. and its true, Apple have prioritized audio/video on their devices for decades - see for example, iOS versus Android audio thread priorities, which until recently were very much in Apples favour.
The trouble is, most "audio pro's" don't really have the technical chops to understand why this is the case with MacOS, nor why Linux represents a parallel advance in audio processing technology. You can do things with Linux audio that are impossible with MacOS, due to its general-purpose nature - but MacOS still provides great value to the consumer, not just professionals.
The great thing about Linux audio is that the devs pushing it forward don't have any of the constraints that the MacOS/iOS folks have to work under. This gets mis-underestimated by audio pro's, imho.
But with things like kxStudio and UbuntuStudio and Zynthian out there, this is going to change radically. I think the audio world is in for some very big upheavals in terms of Linux adoption over the next few years .. but I have all of these systems operational in my pro studio, and have poked these beasts multiple times. Linux rules for audio, and hardly anyone knows .. thats another kind of elite realm left to be explored by the curious and adventurous.
