It’s the clotting.
The clotting can cause damage anywhere. Any organ.
I’m more inclined to think it’s the eventual lack of clotting after Covid associated Disseminated Intravascular Coagulation has consumed the individuals platelets and clotting factors. It starts out as too much clotting and ends up as widespread hemorrhaging. The article mentions evidence of inflammation and bleeding in the brain with imaging studies. Brain bleeding is the opposite of throwing blood clots into the brain’s blood supply; although, there was probably clotting occurring prior to the bleeding-diffuse mini-strokes followed by intracerebral hemorrhaging. No wonder they have brain damage! But it’s just like the flu! that’s all it is, just the flu. /Sarc