I am with you. Some time ago I opened a thread in meta about a similar case:
How to deal with multiple, factually incorrect threads?The only thing I would'nt have done is to self-moderate the thread. That will cause it to have fewer replies and you may find several other threads with more replies than keep being bumped while yours dies.
If you are pissed off that people don't read and say false information you can try reporting but you may have not much success reporting for false information.
Having it self moderated is a good thing because it will discourage the people who spread these stupid rumors without evidence. Take a look at the replies on the topics linked and you will see that most are in a altcoin signature and they are posting similar posts to other people in the topic without giving it any thought just so they can earn money.