He is, apparently, now claiming he was being 'sarcastic', thus indicating that he also has no idea what the word sarcastic means.

> There's tons of people like him, you don't have to waste your time on them.

Unfortunately, the broader 'you' (society) _kind of does_; I know this is nonsense, but lots of people don't, and when he's promoting dangerous behavior that's a problem (see chloroquine).