Liturgical law, not canon law—but that doesn’t undermine your basic point.
The basic point being that the guy has a good deal in common with Nixon on a bad day.
Since when was the morality of the death penalty confined to liturgical law?
Personally, I’d rather just see this optional rite done away with altogether. Why oh why does the focus always have to be on ‘us’ (the people)? Holy Thursday is about the institution of the priesthood. It is about the institution of the Eucharist. And yet, here we are again. With our self congratulatory songs, choirs up front so that we may focus away from everything that we should be focusing on, Jesus, present to us as food at the foot of the cross! I’m so very frustrated and it takes away my right to worship in the way Mass was intended* (complete with thorough instructions). I’ve seen even babies’ feet washed, mostly women’s feet washed, and commemorative towels given out as ‘door prizes’ for those women and men who participated. I’m beyond frustrated by this lack of saying the black and doing the red.