Anyway, I stand by my point that a Jedi executing a fallen foe would be completely out of character with the compassion and chivalry that is their code.

Yeah, it’s real chivalrous to get people’s kids to commit murder because you’re just too “compassionate” to carry through with it. Mace Windu was about to split Palpatine in two while he was mutilated on the floor yelling “No don’t!”. Obi-Wan cut Maul in half like a savage…and shot Greivous soo many times he exploded. There’s no “code” in leaving Vader alive in the show, it’s just irresponsible writing.