Yes yes my mistake
CTRL-SHIFT-Z is redo
And you are absolutely correct about following industry standards.
The thing is after driving hundreds of different cars can tell you with absolute confidence these organizations always want to do or make the next big thing that separates them from the others at the cost of impeding the end-user who for years are already accustomed to a certain way.
Fortunately Godot took the approach of allowing remaps which is it's own share of torture like every time you have a game fest there is always that one guy or gal that has to remap their controller or they can't play to save their grandma. . . . . you know the one.
So every time you install Godot guess what you have todo . . . . .backup your config dir or be like that guy or gal