But I'm not agree with the outcomes of this manga. And I think most of the readers just don't care, because it looks awesome. That's my point.
I'm pretty sure everyone's perfectly aware that Wei's actions are selfish, inconsiderate and very very damaging to everyone around her - that is kinda the point of her character after all.
At the same time I believe a good story doesn't stem from how morally good or bad the characters in it are - I don't think morality has a place in the judgement of art at all! Art should be judged solely by artistic criteria imo.
So, even on the assumption that readers do not care or accept or excuse or whatever the Doctor's questionable choices (which, as I said, I don't think it's the case), I fail to see how judging a comic by its drawings constitutes a bad thing. Sure, you could say there's a lot more to comics than just aesthetics: storytelling, character development ecc; but at the end of the day we're talking about an artistic medium. What I mean to say is that every one of those things I mentioned above on its own is a far better standard than ethics in this case. And by no means the appreciation of any work of art implies the acceptance of whatever's displayed in it.