I highly doubt you read through the relevant bits and instead jumped to argue further:
> One particular instance is the long-term symptoms experienced by a significant percentage of COVID-19 survivors, a condition named long COVID by the patients affected (4). Some survivors of acute COVID-19 began reporting symptoms lasting much longer than the amount of time then reported for clinical recovery. Long COVID has caused skepticisms and slow responses, and to date, there is no effective treatment (5). In contrast, there is now substantial evidence that a significant percentage of COVID-19 survivors experiencing ongoing multisystemic symptoms (6–8), including respiratory issues (9), cardiovascular disease (10), cognitive impairment (11) and profound fatigue (12).
> LitCovid has so far accumulated almost 10 000 long COVID articles (https://www.ncbi.nlm.nih.gov/research/coronavirus/docsum?fil...) and nearly 70% of them do not mention long COVID by name in the title or abstract. We have further collected over 800 synonymous terms for long COVID and shared with the community.
This specific HN thread is a very well done publication. There are a number of prestigious institutions researching long covid and have published in nature, science, cell, jama, and more. Use the tool I just linked so you can confirm that. Perhaps you can stop with the ad hominem.