Wrong [0]. Yes, it's complex, but doctors also know how to read, and they're honestly better at it (when it comes to medical texts) than you are.
Honestly it's just stupid how many people insist on self diagnosing long COVID. "Beyond the limits of our current medical understanding" is, unfortunately, idiocy. It's the exact same logic anti-vaxxers would use to refuse the vaccine. You're making the exact same mistake.
In general, you do not know more than your doctor. Stop pretending like you do. EVERYONE, both sides, just fucking stop.
[0] https://www.cdc.gov/coronavirus/2019-ncov/long-term-effects/...
There are so many examples of diseases which are not currently completely understood, after decades of study. It's surprising that you think that's not true.