I agree and disagree - on the one hand I prefer to have them out in the open so its easier to understand the kind of misinformation that is being spread, but unfortunately it seems like a large number of people (well, everyone to some extent but some people have more trouble it seems) separating fake information from more-or-less true information.
My guess is that by them having this platform, they can easily reach those who are primed for believing what they read. If people weighted the most informed responses equally to the tweets themselves that would be one thing, but my guess is that is not the case.
My guess is that by them having this platform, they can easily reach those who are primed for believing what they read. If people weighted the most informed responses equally to the tweets themselves that would be one thing, but my guess is that is not the case.