Good question. Thanks for referring to MUX again.
I wrote that manifesto years ago, and it's time, that I re-read it.
But I still know the main issue, so after a thought I must say :
Not blurred, on the contrary, they're sharpened.
I make quite a strong distinction if, for example, someone playing a keyboard is concerned.
Some people are the players of a synthesizer, others play like it's a modern electronic organ.
It's not the instruments that make it electronic music. It's a certain impression.
In MUX it could also be contradictionary. Some sounds appear to me as 'electronic', no matter the power source.
A passing train can be a very fast sequence pattern of sounds.
A group of birds, taking off from the ground, produce a mix of tens of different frequency modulations.
But talking through a classical German flute also can sound 'electronic'.
