And contrary to popular opinion, Taleb thinks that you should put more weight on such opinions, because they have skin in the game and are willing to back their beliefs with money. Short selling is not risk free, if they are wrong, they will get burned.
And writing articles like this makes it more likely they become right
Well yeah, when people find out that someone is stealing from them, they tend to not want to do business.
That is how short selling works. Do lots of research, find some fatal flaw in a business model that everyone else has missed, and put money on the position. The final step is you have to advertise your findings, otherwise you are sitting on secret knowledge which the market will not price appropriately.