This made me curious to check him out, because I think as a general rule anything "avant garde" is almost guaranteed to suck. Pretending that a track of pure silence is a composition just smacks of prioritizing trendiness above being aesthetically pleasing, intellectually stimulating, or interesting in any way, much like an artist trying to sell a blank canvas as a painting. It's not about being creative; it's about finding an audience pretentious enough to pretend to appreciate genius nobody else can see because it isn't actually there.
But I thought, what the hell, why not look up some of his music with actual sounds and give it a try. However, I was unable to find a track that doesn't sound like a wild animal got loose in a piano or band room and made a senseless ruckus. Did the man compose any actual music? If not, then why not reduce him to "a man"? What does it matter if he influenced a bunch of other people who want to play at making annoying noises?