I firmly agree - I saw a lot of these guru types when I lived on the West Coast. Sheesh!
Damn know-it-alls that often haven't a clue. These simply profess to, so that they can grab the business/clients!
I wish they'd get off their high horse, and go sit on a Hobby Horse (picture that - Ha ! ) 
I viewed a video about #BITCOIN which spoke of it crashing down from 2300 (which it did while I was on vacation this summer ) - so his prediction was right, yet it happened SO quickly ... within just 48 hours it was moving back up again, anyway.
And his prediction was to $13,000 next year.