That's quite a stretch. COVID-19 infection progressed to a state which caused brain inflammation or mini-strokes are suspected to cause brain damage which may result in dementia.... There are a lot of things in that progression that didn't occur with Trump.
https://www.clinicaltrialsarena.com/comment/covid-19-brain-damage-dementia-risk/
Biden, who has never been reported to have tested positive for COVID-19, managed to develop dementia all by himself.....probably his last verifiable individual accomplishment. Biden could barely speak while he was campaigning, and you fools elected him anyway.