The day before the product goes out the door is the last chance you have to fit that last UX bug in.
The last chance you have to make a simple update to the documentation.
The last time chance you have to get it “right”.
All these last changes, generally end in disaster, you miss a space, you break the build, it makes it worse than you thought.
And you’re left with it being worse than what it was before.
The last chance was two weeks ago, you knew it then, you know it now, so don’t muck with what is perfect today.