Please consider applying the correct word to the context you wish to discuss.
IANAL, but I don't believe murder can only be if it's premeditated. In fact, IIUC, most murders are not premeditated.
Some examples:
Felony murder: https://en.wikipedia.org/wiki/Felony_murder_rule
Depraved indifference: https://en.wikipedia.org/wiki/Depraved-heart_murder
Murder without premeditation: https://www.floridatoday.com/story/news/crime/2019/11/20/kal...
I'm sure there are many other examples.
The fact that people keep talking about gun ownership in Texas like it's a deterrent is odd. It's not like the criminals don't have weapons too.
Getting pretty deep in the semantic weeds here though, and I feel obliged to say I have no horse in this race either way. Don't kill or murder me :)
Murder is the unlawful killing of another.
Homicide is human death by the hands of another human.
Murder is a legal term.
Please consider using the correct definitions of words when telling others to "please consider applying the correct word".