May want to pull on the reins of that mighty high horse a bit. The person is grieving and we don’t know all the details.
Then don’t make a post to make himself feel right about a bad decision.
The vast majority of responses are an indication of how utterly ridiculous much of the emotion surrounding these political issues.
It used to be that your brother died like this and the estranged brother skulks into the back of the church, says a prayer and then when the room is empty, says his good byes.
Asking the SIL for forgiveness would be a good first step.