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.