It isn't that easy. How does one change an entire civilization? A drastic action that nobody could overlook. Strange did that when he broke the mirrors of England, opening up magic to the rest of the world. Well, can't really do anything of that level here, not to the faeries. Eroding it over time. But how long would it take for that to happen in the first place?

Strange sighs, obviously a bit more annoyed with himself than with Yuya, as he leans back into a childish pout. "I hate this sitting around and talking about things," he grumbles. (Who's surprised, absolutely nobody.) "I thought I knew what to do but apparently all my plans are 'idiotic' and 'might destabilize all of creation.'"

He's physically making the air quotes as he says that...but alright, even Strange can see a bit of humor in a plan so dumb it might have destroyed literally everything. The pout lessens, as he smiles slightly.