Why are Trolls not blocked

That's something you need to ask Agon it's their site they can monitor it as they see fit. It has nothing to do with free speech as those who have no idea what that means in a constitutional sense would have you believe. It's  a private site not a public forum.

We’re in the age of misinformation with a conspiracy theory behind every shrub. There is enough of that slop all over the internet no need to have it here as well with trolls posting links to these dubious sites. I’ve seen these trolls linking to conspiracy theories on that virus going around this site doesn’t need to enable this idiocy.