It is by far the highest population state in India. More people = more scandals. But even when you try to account for that, there’s still an aweful lot of scandals coming out of Uttar Pradesh.
And many of those scandals involve local police or rich locals who believe that laws are for other people, but getting international attention does land them into trouble. So what we’re seeing is probably just the tip of the iceberg, but that’s true in other places as well.