Spotify isn't geared to handle people streaming 8+ hours of ASMR audio per day.
Their model doesn't support having to pay artists for audio tracks people put on random shuffle while they sleep / game / study / work.
"White noise" here I think just means tracks without talking.
So mic scratching, inaudible whispers, tapping on random items, mouth sounds... all the stuff ASMR folks do.
These folks figured out how to get Spotify to pay, with a bunch of new tracks every week that people are actively listening to, and Spotify doesn't want people doing that.
Are you saying you believe the issue is 1. that people listen to spotify 6/7/8+ hours a day, or 2. that people listen to those tracks specifically ?
If it's 2 then it makes no sense Spotify needs to pay either way, and if it's 1 then it makes no sense either, people didn't start listening to music in the background while working or studying or relaxing or cooking once white-noise-like feed appeared, they've been doing that since before I was born, so if spotify business model doesn't account for that model it is simply not viable.
From the article, it seems the issue is another thing entirely : people listen to that while sleeping, and that drives the value of advertisements down.