The degree to which previously existing mythology is still canon in both the DCU and the MU is debatable. Marvel, for example, has wholesale retconned certain aspects of the stories of Hercules and Ares to make them more heroic, and the characterizations of most mythological characters in the DCU and MU conflict wildly with who they were as myths.
I got no problem with treason. Admittedly, I don't know exactly what you're referring to here, but in general, the word "treason" is neutral to me. Some treason is good. Some treason is bad.
But see, that's the thing about comics. Every good guy gets one freebie evil-villain phase. Comes with the territory. Totally forgivable, because of the cosmic-level powers and threats that these guys have to deal with. But Hank was just a wife-beating *****ebag.
First of all, they're both crazy. Second of all, terrorism is like treason; the goodness or evilness of it is in the eye of the beholder. I can point to quite a few "terrorists" whose motivations, at the very least, I agree with. There have even been terrorists in history whose actions I agree with. For example, the action of the American colonists during the revolution are commendable (although their motivations were ridiculous.) Third and finally, they were raised by a psychotic evil supervillain. What do you expect?
Since when did alcoholism descend to being on the same moral level as beating the **** out of your wife?
Which is entirely out of his control.
First, Zemo was a Nazi. Second, I don't see how distrusting "reformed" Nazi psychos is anywhere near as bad as wife-beating.