There's a German documentary "The Net" from the early 2000s which starts out looking into Kaczynski's experiences with MKULTRA and winds up in a deep dive on the origins and influences of the early internet: https://youtu.be/Yn9BvNAUvcU
The specific reference in the article is to "climate catastrophism." Anthropogenic climate change as a real and serious issue is not necessarily incompatible with the notion that particularly apocalyptic interpretations may be used as a means to further certain agendas or viewpoints like austerity and misanthropy (check out the recent work of Grimes as an excellent example).
Some avenues to consider/investigate (consult with your doctor before trying any treatment, but expect to hear "there's no reason to believe that will work" in many cases):
"Could tiny blood clots cause Long COVID's puzzling symptoms?" (article reports some people have had success with anti-coagulant therapies, but be especially careful with those): https://www.nature.com/articles/d41586-022-02286-7
From personal anecdata, I took a PQQ/CoQ10/NAC combo supplement recommended by the local supplements store after both of my two infections, and have never had any long-term symptoms. NAC in particular seems to show up often in the various recovery protocols that are floating around.