I don't think this is going to be the death of The People Also Ask Method for SEO.
Instead, I suspect that Google will filter better for quality.
There's definitely going to be a sea change in terms of a shift to quality.
This is where cogent, concise, and accurate information comes in.
Since the whole point of PAA is to boil down information that truly delivers on an answer and also allows for deeper information, Google's recent actions that crack down on PAA will unleash a flight to quality.
This is part of a natural progression in my view.
So it's not anything to worry about in terms of PAA disappearing overnight.
Instead, it's an opportunity for those who are actually into delivering value to the lives of the flesh-and-blood people who enter these questions into Google and who are looking for real, useful answers.