The TL;DR of it is that he got upset because I didn't reply to him on here for a couple weeks after he'd asked about the update's progress (which is basically done, by the way; I'm about to post the release schedule).
He got all demanding and basically kept whining about my lack of communication, the increased dev time for the current update (apparently having missed that the update is going to be longer than usual), and ultimately being an entitled little shit. All of that across like 9 or 10 messages, the last of which (and the one my message was in reply to) being this:
