I totally agree. In my opinion, the worst take on this was from Tom King.
In Tom King's story, Batman leaves KGBeast totally incapacitated in the snow to die. Or Batman almost broke Bane's back, because that would worse for Bane than killing him.
Honestly, I have problems with the way writers handle "I won't kill you, but I don't have to save you''.
If you are the person who directly put the other person in mortal danger, then you let this person die. How could this not be considered murder?