Anybody who thinks Red Mage is a super easy job fundamentally doesn't understand that just because a job is easy to play on a basic level (spam thunder, aero until proc, cast procs, use buffs, balance out mana for 80/100) doesn't mean there isn't a thousand tiny little ways to optimize it. I'm not going to claim Red Mage is total galaxy-brain in execution, but it's not as cut and dry as something like BLM where the obvious way to optimize it is to move less and cast your biggest spells as often as physically (magically) possible.