It wasn't just the blog post. Did you miss the keynote, numerous posts on Reddit and other outlets, as well as the threatening calls and text messages? I'm using his own definition of "scorched earth nuclear". This goes far beyond a single tweet.
> What's defamatory about it?
Oh, I don't know. Calling your competitors "cancer", their product a "cheap knock-off", and urging people to stop using them?
If my competitors are selling an inferior product, I would let that speak for itself, which should make my alternative shine in comparison. Going on a mudslinging crusade just reeks of desperation and immaturity, and the defamation and blackmailing could be illegal. If he really had a case against them, it would be resolved in court.
I'm not the target audience of either, but if I had to choose which one to use today, I would go with WP Engine based on this alone.
