Selecting some stuff to cut, then selecting rest of code to delete causes what I want to delete to be copied to the clipboard.
Because Shift+Delete is Cut hotkey for some archaic reason.
A pain in the ass, because obviously I want to delete what I selected and not cut it to the clipboard.
Okay, I could just slow down and wait to left my left pinky depress left shift fully.
But blah, fuck that.
I found I can over-write the default keymap for shift+delete (and some others) made it delete_word which is way more helpful.
Preferences | Key Bindings
Paste this into the User keymap.
[
{ "keys": ["shift+delete"], "command": "delete_word" },
{ "keys": ["ctrl+insert"], "command": "none" },
{ "keys": ["shift+insert"], "command": "none" },
]