It's very easy to avoid getting criticized in your obituary, don't be an asshole.
If you devote your life to being an asshole, the civilized response gloves will come off and maybe more people should learn this lesson.
1. Plenty of living people defend the reputations of dead people.
2. There's no proof that anything we say or do has any impact on dead people.
No thanks, because a person is not a group of ideas + a mind.