So, unpopular opinion, but I think Jared Leto is overhated. The only bad thing about him is that he's a method actor weirdo, but so was Marlon Brando--and that guy was more SJW. His Joker is hated mostly from bad design and writing choices, which reflects more on the producers and Snyder for approving those dailies. He wasn't great in BR 2049 and Tron: Ares, but those movies were pretty boring in general, so it's not like his performances stood out as particularly bad. He doesn't behave like a Rachel Zegler or a Milly Alcock, whom actually deserve the hate because they are sabotaging their own productions.
I regard him with indifference.