a lot of people seem to mistake darius as a good guy because of the skins voice lines.
looks like riot has done a poor job of portraying both characters properly.
either they focused too much on making garen look like a tyrant, without explaining his motives (peace and protection for his people), or they havent done a good enough job portraying darius as a bloodthirsty killer who wants nothing but endless conflict and war (even though he wants freedom from tyrants for all people).
currently it just seems to paint the picture of garen being a tyrant and darius being a relatable liberator, which isnt true.
the whole point of the skins was that there is no truly good or bad guy. theyre both extremes of order vs. chaos.