I don't think I'm ever going to understand the need for every job to be great at every aspect of combat. There's nothing wrong with RDM lacking in AoE, they have an AoE combo. Scatter/Enhanced Scatter to build mana, a single spell to unbalance mana levels slightly, jump in for Enchanted Moulinet until you can't anymore, jump back out and repeat. It's SO GOOD at single target that it doesn't NEED to be good at AoE.

It feels like people only want this to be a thing because the "meta" is mass-pulling trash between bosses. That's not a game problem, that's a players rushing content problem. You can't blame the job design for that. Other jobs have just as little and/or basic AoE capabilities and almost always at the expense of burning resources dramatically where TP-based jobs are concerned.