I wonder why you posted that, since it shows him clearly not proposing injecting bleach. That quote shows him wondering if there is some way some disinfectant can be injected into the bloodstream to destroy the virus, and that it would be interesting for doctors to look into that. He was obviously told that UV light is a disinfectant that has been used to directly treat blood (which is true).

I really dislike Trump, but I feel like I end up defending him quite often against people who are just completely uncharitable in their interpretations of everything he's ever said or done.