Ah, but take a look at the first line you quoted
As the Dungeon Master, you aren’t limited by the rules in the Player’s Handbook, the guidelines in these rules, or the selection of monsters in the Monster Manual.
I would classify the "2 questions you should ask" as guidelines; ergo Larian doesn't need to ask them!
On a more serious note, the answers to those questions (with explanations of Larian's thought process on
why it'd improve the game) is something I really want to see in this next mythical community update.
