I agree with OP's general sentiment that any official response will need to explain the reasoning behind the strange behaviors raised in Gio's article in detail rather than the more broad and ambiguous response Miles has given. One example of such behavior that seems to get overlooked/forgotten in many of these threads is the initial NDA juggling that happened prior to the legal threats, prior to the complaints about Gio's blog history, prior to Bambosh leaving.
According to Gio, he was ready and willing to sign NDA after Bambosh had already done so, but Homestuck did not provide the NDA despite saying they would multiple times. Gio makes it seem as if Homestuck intentionally prolonged the process in order to try and get Bambosh to sign while circumventing Gio's involvement entirely. From the text logs Gio has shown, it seems that Homestuck understood that Bambosh and Gio must both sign the license in order to proceed but are trying to pin the blame on Gio for stalling progress.
What explanation could an official response give for this behavior other than what Gio has given? I never want to rule out extremely poor communication but it'd be a hard sell in this case, especially considering that professional lawyers are assumedly already involved in the process by this point. This is just one example of strange behavior, but it stands out to me as a more concrete example of hypocrisy as opposed to the alleged emotional abuse stuff. A lot of context is lost in the text logs and we see it through Gio's interpretive lense so I'd rather we focus less on the characterization of the communication and instead focus on the actual things being said and done.