What this guy's doing is called 'talking your book'. It's typical behaviour for shortsellers, they find a company that has some problems that the market hasn't

What this guy's doing is called 'talking your book'. It's typical behaviour for shortsellers, they find a company that has some problems that the market hasn't realized yet, they quietly build up a short position and then go public with their report, trying to convince other investors of their idea, driving down the price and earning a return on their short position. It's not pro bono educational work.