Wrong.
Except it only lets you prepare a low level spell, and MotAO only lets you fill a prepared slot with a new spell.Requirements
To qualify to become a mage of the Arcane Order, a character
must fulfill all the following criteria.
...
Spells: Able to prepare and cast 2nd-level arcane spells.
...
Edit: Ohhh, I was wrong, it doesn't restrict the number or level of spells you can prepare! That works just fine then.