And where does the Unofficial Elder Scrolls Page get that information? From elvish sources.
Here's the Hammerfall version of Lorkhan:
Yokudan version of Lorkhan. Sep is born when Tall Papa creates someone to help him regulate the spirit trade. Sep, though, is driven crazy by the hunger of Satakal, and he convinces some of the gods to help him make an easier alternative to the Walkabout. This, of course, is the world as we know it, and the spirits who followed Sep become trapped here, to live out their lives as mortals. Sep is punished by Tall Papa for his transgressions, but his hunger lives on as a void in the stars, a 'non-space' that tries to upset mortal entry into the Far Shores.
He is the High Rock version of Lorkhan:
In Bretony, the Bad Man is the source of all strife. He seems to have started as the god of crop failure, but most modern theologians agree that he is a demonized version of the Nordic Shor, born during the dark years after the fall of Sarthal.
Here is the Skyrim version:
Nordic version of Lorkhan, who takes sides with Men after the creation of the world. Foreign gods (i.e., Elven ones) conspire against him and bring about his defeat, dooming him to the underworld. Atmoran myths depict him as a bloodthirsty warrior king who leads the Nords to victory over their Aldmeri oppressors time and again. Before his doom, Shor was the chief of the gods. Sometimes also called Children's God (see Orkey).
Here he just through the curse onto the Orcs. Clearly none of the Elven gods had done something to him but he through the curse onto the Orcs instead of Orkey's (Arkay I believe) people. What was the meaning of this. The Mer hadn't even done something to him yet. No wonder they don't like him.
Cyrodil's Version:
Cyrodilic version of Lorkhan, a synthesis of Nordic Shor and Aldmeri Auriel. His importance suffered when Akatosh came to the fore of Nibenay religion. Shezarr was the spirit behind all human undertaking, especially against Aldmeri aggression. He is sometimes associated with the founding of the first Cyrodilic battlemages. In the present age of racial tolerance, Shezarr is all but forgotten. In 1E 266 the lost Shezarr, the missing sibling god of the Eight Divines, arrived at the White Gold Tower in the Imperial City and transformed the dying Alessia into the first of the Cyrodilic saints becoming the first gem in the Cyrodilic Amulet of Kings.
He sounds decent here but the followers of the Nine forgot him. Wouldn't that mean they deserved to be punished.