This movie was made to smear Alexander the Great
The biggest smear is when Alexander's weary soldiers demanded not to push further into India and to return to Macedonia to be with their families before they died. In the movie, Alexander denied their request and executed the 'mutineering ringleaders' then 'marched onward', painting him as a totally unreasonable tyrant. In reality, Alexander pondered their demands for a few days then AGREED to turn back, and didn't execute anyone! He was really a merciful leader who brought the light of civilization to his subjects and was accepting of other cultures, not a selfish ambitious monster. How the hell is this total lie acceptable in a historical film? This is not simply artistic liberty or anything else..
Secondly, based on only one unverified historical rumor that Alexander and his friend Hephaestion were secret lovers, they paint Alexander as a gay Nymphomaniac who wanted to screw everyone. I don't dislike gays, but it seems his historically innacurate portrayal as gay is also meant to smear him.