I never read Cerebus cover-to-cover, because, well, it's freaking huge. I've only perused a couple of volumes, in particular, the first and last volumes.
I'm reading his wikipedia article now. I never realized he'd become mired in a controversy and gained such a weird reputation. He doesn't seem to self-identify as misogynistic though.
You want to get Reads, and make yourself sit back and read all the lengthy text passages.
You'll find the crazy laid out pretty plainly there.
And then you get to decide how to reconcile the facts that (a) Sim is batshit misogynistic and (b) Sim is a total master of the form of Comics, who did some amazing things in it.
(I'm a lady who makes comics and learnt a fuckton from Cerebus. I am pretty glad "Reads" was serialized while I wasn't hitting comics shops regularly, and I didn't get the collections in order, so I could see some of the amazing techniques he played with later before realizing this was not a man whose work I wanted to support any more.)
For him to identify as misogynist would require him to accept a world-view where viewing women as unthinking beasts was hateful, rather than being a divine message from the true god Elohim about that female trickster Yahweh.
Personally I just think he went crazy with hate over his ex-wife.
If the guy tries to explain himself, and only comes across as even more batshit insane, then I suppose that's his own tough luck (...or grand design, if that's what suits him). At any rate, when a person winds up in a hole, it's usually best to stop digging. From the sound of things, it seems entirely possible that he probably doesn't even really care, either way, anymore.