RandomDragon speaks true. Kevin, this is your chance to provide compelling (not definite, since he could just grab some real, random, non-Seattle IP and claim it was the one on the post) evidence that you are speaking in good faith; if you posted that outburst yourself, your claim to be hacked would be a lie, and you would have thus betrayed the fundamental assumption of communication: that the other parties can trust you to not deceive. If you lied, we will have no obligation to consider your words any longer. Not that we had a technically binding obligation before, but unless you are proved a liar it would simply be the decent thing for us to give your claim of being hacked some consideration (no matter how slight) since it is currently possible, though various forumers differ on how likely.
TLDR; if you were hacked, you have room to defend yourself rationally against these other accusations; if you weren't, you're a liar, a sophist, and acting in bad faith, and we can ignore you as much as we want.
Oh, and we need Erk's side of the matter; he hasn't had much of a chance to give us his 2 cents.
It would be so trivial to post the comment's listed IP that I'm taking that as evidence that the claim is false. The only valid reason you wouldn't post the IP is that you'd be compared to post your native IP as proof too, but this is not truly required.
Thing is, you can enter an IP into sites to determine where the IP came from. That Kevin's github profile says he's in Seattle is publicly-available information, so if the "hacker's" IP says it comes from outside Washington then it would confirm this claim without him needing to dox himself.
I highly doubt he cares enough to try to prove anything; he only knew about the post because dpwb and I were surprised to see him posting here at all. Pretty sure he's leaving it up to toady/threetoe to decide if they want to do anything about it.
If I'm reading this correctly, you're saying Kevin didn't post here, as he told you he didn't know about the Angry Outburst Post? Evidence in Kevin's favor, then.