Reading the section in the MM from a strict RAW viewpoint you're going to have a problem. Unless you're taking RAI into account it really doesn't make a lot of sense.we still have the base problem that the wording of those two paragraphs in the MM lead perfectly reasonable people to two perfectly reasonable - but opposite - conclusions. ...So is the answer that we all agree to disagree? I have no idea.
Frankly, I'm puzzled about your stance in this. You seem to insist seeing a problem where there is none.
In my game, RAW is meaningless - I only care about RAI. Since determining 'intent' can be tricky, what I'm really using is RAID (Rules As Interpreted by the DM)

Maybe you should try this, too

See Mistwell's answer!Mistwell: Actually, "guideline" and "rule" are synonyms. Whether or not that carries weight either way in this discussion I have no idea, but surely that makes sense as to why it's confusing? Technically I would call all of the PHB, DMG, and MM "guidelines." But it's really just semantics.
Again, I feel, you're too set on trying to read everything as RAW. The books aren't everything! Sometimes you (as the DM) can and should (!) decide for yourself how something is supposed to work in YOUR game.
If the books said 'in situation X use rule A or rule B' which rule would you use?
Do you give up playing the game because there is no way for you to decide which rule to use?