I kind of thought the opposite. I had assumed it was actually just an older thing but fell out of fashion, but apparently it was "invented" in the 60s which surprises me
I think this attitude did more bad than good. It caused people to concentrate on pandemic death numbers and even conclude covid is not worse than flu (even though death rate was 10 times higher than of flu).
What covid did though, besides killing some people it fucked health for a much larger number of people that survived it.
Regarding the 'attitude', you could be right. And this IS m/Internetfuneral, so...
The one sliver of silver lining I see with post-covid syndromes is that it's opened the discussion about other well recognized but generally ignored post viral syndromes. "Had the flu, now I have this cough that's been persisting for a month.", etc. There's serious talk now in the scientific community about Chronic Fatigue/ Chronic Myalgic Encephalopathy having a viral, or rather post viral origin. Science and understanding move forward, but the pace varies.