Don't care to celebrate his death, but considering the guy and his brother spent lots of money (lots is an understatement) on pushing the climate change is a hoax narrative, and he won't even be alive to see the long-term damage he's done to our country and environment I won't lose any sleep over him. Not even including, he was one of the big players in pushing and spending money on getting more dark money into politics thanks to Citizens United. Kochs have tried to get the EPA abolished for many years.
You're always talking about deep state conspiracies within the government, the Kochs are like the prime definition of money that feeds the real deep state.
The fact you can't understand why people are "celebrating" his death is amusing. I think you might be more obsessed with goldfly.