As you say, it hits a nerve... But what's there to be angry about, when that happens anyway?

I suspect that said "neurotic, senseless need" to keep up with the corporate Joneses is what drove many organizations to adopt Slack in the first place. That leaves them feeling vulnerable about the next thing that might be coming up, which they don't want to miss out on. IMO Ryver is being rather clever by playing on that insecurity so openly.