You can always ask him yourself. It was said by him in #gentoo-dev on freenode on Thursday, 21st, 22:25:35.
Here's the context as well:
[Thursday 21 June 2012] [22:21:56] <mgorny> I just left #systemd
[Thursday 21 June 2012] [22:22:00] <mgorny> be proud of me
[Thursday 21 June 2012] [22:22:11] <_AxS_> mgorny: ..for going in or for leaving? :)
[Thursday 21 June 2012] [22:22:26] <mgorny> for leaving. i showed Lennart straight in the face that I don't care about him!
[Thursday 21 June 2012] [22:22:37] <mgorny> well, maybe not straight but still.
[Thursday 21 June 2012] [22:22:50] <mgorny> now let's start planning my new init system :P
[Thursday 21 June 2012] [22:23:11] <_AxS_> mgorny: can we call it something nice and open.. oh, how about openrc ?
[Thursday 21 June 2012] [22:23:29] <Poly-C> mgorny, logs or it didn't happen :P
[Thursday 21 June 2012] [22:23:44] <mgorny> Poly-C: er...
[Thursday 21 June 2012] [22:23:44] <mgorny> 22:23:22 ::: You have left #systemd ("Auf Wiedersehen!")
[Thursday 21 June 2012] [22:23:54] <antarus> so why did you leave?
[Thursday 21 June 2012] [22:23:58] <antarus> I thought you loved systemd?
[Thursday 21 June 2012] [22:24:18] <mgorny> _AxS_: I said init, not RC :P
[Thursday 21 June 2012] [22:24:31] <mgorny> antarus: are you jealous or something?
[Thursday 21 June 2012] [22:24:36] <_AxS_> mgorny: right, gotchya
[Thursday 21 June 2012] [22:24:40] * antarus is not in #systemd
[Thursday 21 June 2012] [22:24:50] <mgorny> I have already pointed out advantages I see in systemd
[Thursday 21 June 2012] [22:25:03] <mgorny> but that doesn't justify what they're doing to any coding standards I know
[Thursday 21 June 2012] [22:25:18] <mgorny> s/any/every/
[Thursday 21 June 2012] [22:25:35] <mgorny> that man should just be put in line with Ciaran and shot so he'll do no more harm
[Thursday 21 June 2012] [22:25:40] <_AxS_> ... i didn't know 'systemd' and 'justified' could go in the same sentence..
[Thursday 21 June 2012] [22:26:04] <mgorny> or even worse