I don't think 'FOSS leads to enshittification, advertising, and bad practices' is implied by the article. What the article implies IMHO is that relying too much on ads leads to enshittification and bad practices.
I'm just speculating here. If somehow we could determine the exact waveform of the ringing, wouldn't be possible to just play the reverse waveform and cancel it out? Like how active noise cancelling headphones are doing.
Tinnitus isn’t sound in the “vibrating molecules of air” sense—it’s a neurological phenomenon. Anything’s possible—but our perception of sound is not obligated to play by the same rules as physical sound does, and ANC relies on those rules.
I have tinnitus which is within the frequency range I can hear, what I've found using headphones and a web tone generator is that I can establish a 'beat' frequency but I can't cancel it out entirely. That leads me to suspect that the frequency and phase of the tinnitus isn't consistent enough to cancel without actively tracking it, and how do you do that?