To condemn "internet sleuths" is to "shoot the messenger". Blame not those quickly finding and posting information about a crime - blame those who take that information and run with it before it's been properly scrutinized.
Hey everybody! Fast Eddie B is a Klingon Sympathizer! He was the responsible for the destruction of the Moon of Praxis!
It's not my fault for saying that! It's anyone else's fault for spreading it!
How is finding and posting information without properly vetting it any better or indeed different than "running with it?"