Doesn't matter what the games say. Doesn't matter what Gamefreak says or the players say. Doesn't matter if the whole community says Lysandre is redeemed.

When the mobs and the press, the whole world tells you he's redeemed, it's your duty to plant yourself firm in the river of truth and tell them "No, Xerneas redirected the energy of the Ultimate Weapon directly into Lysandre and turned him into a freakish crystalline man-tree trapped in an eternal waking nightmare, doomed to forever live out a twisted mockery of the perfect, unending world he dreamed of."