Nope! It's stated in MoR that, unlike other advanced spells, the patronus is considered too difficult because of things like precise movements, and the emotional/willpower aspect, not magical strength.
So the gestures were complicated and delicate. That didn't stop you from learning it when you were eleven. It meant you had to be extra careful and practice each part for a lot longer than usual, that was all.
Most Charms that could only be learned by older students were like that because they required more strength of magic than any young student could muster. But the Patronus Charm wasn't like that, it wasn't difficult because it needed too much magic, it was difficult because it took more than mere magic.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 98. The previous thread is at nearly 500 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system.
Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: