Well, considering the fact that his name has "Zeus" in it, it's most probably unlikely that, if he does appear, they would ignore that crucial tidbit of his history and completely reinvent him as they may do with other characters. Putting that aside, humans in the DCEU view the Olympians or the Old Gods as nothing more than myths, due to them being killed off by Ares, so I get where you're coming from, but it wouldn't really be a contradiction, save for Wonder Woman or the Amazons who may see Maxie as a desecration. Then again, I doubt they would make him involved in her affairs, as he is mainly a Batman villain. Plus, he does already exist in the DCEU. You can visit his page here.