I agree with you, this sort of question risks becoming hyperbolic and philosophical to the point of complete paralysis. Isn’t all art a call for attention? Isn’t all art a personal expression of what is inside the artist? Doesn’t all art comprise both a personal and impossible to quantify point of view? Doesn’t all art have a political context?
The act of creation is both personal and public. It is both a manifestation of my personal feelings yet occupies the real world which I don’t truly own any of. So, yeah, we could talk all day about how the private and lock away 4-Track tapes is the sign of a true artist and the SoundCloud promoted after a viral tweet is automatically trash.
Or, we could just put aside the over complicated (and in my view counterproductive) grandstanding/gatekeeping about what art IS and instead look at creations we enjoy and that motivate and inspire us. We can spend all freaking life time wallowing in the pits of this argument over what formats are legit. Many people have! Or we could skip the question of what publication tools represent a real exploration of sound and just say “dang, that sound I found on this BBS board (or instagram, or tumblr or a blank unmarked tape I bought of eBay at 3am) is really cool! Let me hear that again!