> You're wrong that long covid evidence is anecdotal.
Fine, convince me. Provide a citation from a study where:
1) the results are NOT gathered by survey from a self-selected population
2) the study is pre-registered, with endpoints determined in advance
3) the study is prospective, longitudinal and randomized
4) there is a control group
5) the participants are verified to actually have Covid
6) a significant effect is shown on the pre-registered endpoints
and I'll take your claims seriously. The only current study that I'm currently aware of that remotely comes close to this standard of evidence (but doesn't meet all of them) is this one: a controlled, retrospective study of 250,000 kids, which found that kids without covid had roughly equivalent long-term symptoms to kids who did have covid.
https://www.medrxiv.org/content/10.1101/2021.05.05.21256649v...
I bring up this study only to underscore the point: essentially all current "long covid" data is self reported and uncontrolled, and when you start to be rigorous, the claims of severity rapidly diminish. Here's a relevant editorial in Nature:
"Studies of long COVID thus far—nearly all from high-income countries—have been difficult to interpret or compare, not only because of the lack of a consistent case definition but also because of systematic selection bias of cases, often without appropriate controls....Meanwhile, community-based studies have raised questions about the representativeness of cases compared with the general population, especially those using online recruitment, with many studies relying on self-reported symptoms and without laboratory-confirmed diagnosis of SARS-CoV-2 infection. Selection bias becomes even more pronounced when people are recruited through online support groups, where very high rates of often nonspecific long-term symptoms have been reported, even in children."
https://www.nature.com/articles/s41591-021-01402-w
> Patients often show reduced lung capacity of 60%
Citation required. See above for standards of evidence.
> The brain fog is also often much more severe than just not being able concentrate a bit, people can't do simple calculations, can't follow conversations, can't read more than a page in a book, immediately forget things they just talked about.
Citation required. See above for standards of evidence.
> Many people become completely unable to perform their usual tasks.
Citation required. See above for standards of evidence.