But you can flip that same logic around and point out "nowhere in the rules does it say 'make sure to deal out ALL damage cards before checking for destruction, WHATEVER YOU DO do not stop dealing damage cards even if the conditions for the ship's destruction are met." It's a two way street.
They could have very easily worded page 16 to say " After all damage has been dealt, if the number of damage cards dealt to a ship is equal to or greater than..." but they didn't. They said " When the number of damage cards dealt to a ship is equal to or greater than."
You may not fully understand the attitude, and that's great, but they could eliminate this discussion with a couple simple words and they haven't done that, which leaves room for interpretation that - whether you like it or not - has some pretty legitimate basis for consideration going by the phrasing of the rules.