Pointing out that short sellers have an incentive to meddle with a company's performance is definitely fair play. Sure short selling by itself is not harmful f

Pointing out that short sellers have an incentive to meddle with a company's performance is definitely fair play. Sure short selling by itself is not harmful for overall market performance but, generally, it's a lot easier for third party to affect a company's downside than their upside. That's just a fact of life.