Iirc I’ve posted along these lines before:

1. I changed my mind about the death penalty when way too many convictions were revealed as false.

2. I still think that a few crimes are so vile that the death penalty should not be eliminated altogether if guilt is certain.

3. Afaic the Constitutional prohibition of cruel and unusual punishment is not primarily for the good of criminals, but for the good of society.

4. Afaic the botched execution deserves federal scrutiny. I’m not sure criminal negligence was involved, and I’m not sure it wasn’t.