It’s usually political: Trump and other right-wing politicians (e.g. Bolsonaro) took an early position that COVID wasn’t a serious risk when the economic cost became clear. That created a cottage industry of people downplaying the risks or hoax cures, all with the underlying desire to return to business as usual circa December 2019. When Trump lost the election, that also created a second wave of people trying to spin the pandemic as a conspiracy to steal the election by making him look bad.

If you look at that guy spamming this thread up, he identifies as a Republican and appears to repeat whatever the current talking points are.