I’d say it’s more about the people still around than the man himself. Each death can be a tragedy to someone, in this case it would be his immediate family, his friends, and the people in his community that like the Cheney the person, not necessarily the politician. Harris wanting to help with the pain those people are experiencing is a kind gesture to those people. Salt in the wound isn’t going to have any effect on Cheney, but it will on those still here that are experiencing pain from his passing.
Personally, I don’t want to be like those on the Right. I would rather live a life where each person’s life has value innately. Those who’s lives were negatively impacted and abruptly ended by the man’s policies have not experienced justice either. I can only hope we learn to be more caring than those who came before us to end the cycle of greed and violence.