Also I quoted that specific part of your post to call out how unrealistic it is to wait until you are at a life threatening disadvantage before you defend yourself.
Why would you be using deadly force if you ere not at a life threatening disadvantage?
I mean… deadly force should only be used when deadly force is either about to be used on you or is currently feign used on you.
Being pushed doesn’t meet that…
Have you ever pushed a person who was smaller than you? Have you ever been pushed by a person bigger than you?
Because you are saying it would be ok if somebody died in either situation.