Coronaviruses have been with humanity for a very long time, and people have been reporting post-infection syndromes surrounding them - and have been ignored or downplayed - for decades now.
There are five endemic coronaviruses, all of which likely started as an epidemic (two are documented of course) and evolved into what we call a "common cold", with susceptible populations suffering outsized effects.
Now that we've finally (and I think we can say, successfully) achieved endemic equilibrium from covid-19, it's important not to lose compassion for those still suffering (and to perhaps bring awareness online regarding this syndrome going back a long time - some have been suffering for many years).