Why do people think Old Xerath's lore was better?
To be honest, I'm done with hearing this. As a Xerath main who played both pre and after Xerath skillsets, as someone who has known both old and current Xerath lores, new Xerath lore is much deeper, much better written and makes him more interesting. New Xerath got suffer more than old Xerath did, he had reasons to ascend. Even though he got corrupted ideas after his Ascension, human Xerath was nothing but a grey character with extreme ambition. Old Xerath's only reason to destroy entire Shurima was ''more magical control, understanding nature of magic''. He ascended to release his mortal coil, his weakness for the love of magic. He considered magic as more valuable more than thousands of people's lifes. He may seem like less evil than current Xerath, but current Xerath at least felt guilty for what he was going to do. He killed his best friend in tear of sadness, he felt guilty but there was no turning back.
After Ascension Xerath is pretty complex though. He seems evil, and yes he is, but there are reasons for that. He still has will of man. His body is something celestial, it is beyond human comprehension, but it is not exactly correct for his mind. He is still weak as much as a human being with strong will. So, what I'm trying to say is, he lost his parents, he lost his trust on his best friend, he was trapped in a ''box'' for thousands of years. Renekton was not the only one who got insane. Then also there is his immense powers due to his Ascension, and you know what would 90% of people would do with tremendous super powers... They would turn evil, and they would think they're doing what is right.
New Xerath is more realistic, even a being from us if you think about it. He is general answer of a question that asks ''what would most of people do if they suffered and then got super magical abilities?''
He is in a unique placement in current lore now.
He is much much more interesting than ''but I wınt tu understınd netur uf megik''
He is complex character, he is evil in human standards, but he is probably doing what is right in his mind and he seems himself as grey. He even tried to relax himself because of how he is killing people with the idea of protecting Azir from people.