Asisreo
Patron Badass
The problem is that you're comparing yourself to someone when there's hardly a basis for comparison. Like you said, if you wanted pure AoE, you'd get it from a class that gets it sooner. But you're playing a monk. Other Monks don't get any AoE until level 11 as a sun soul and it's even worse than a 4-Elemonk's since by that level, you'd get fireball.It's not particularly good at what it does, no, at least not for me when I play it. It does the things you describe, that's for sure, but not well enough for me to really care. If I wanted AoE I'd play a class that actually did AoE. The control also comes really late and doesn't compare to the Wizard at all, and, in fact if you have a Wizard you're always going to feel like the red-headed step child. He's been casting Wall of Stone for 8 levels before you get to do it. Sorry, waiting a ton of levels to get to do something else another class already does isn't exciting. I would have much preferred for the subclass to get their own abilities.
Your wizard can wall of stone, but he may be busy concentrating on stronger concentration spells.
It's not about what they can do, it's about what you can do within your realm of power. Because they might be upset that you get to throw fireballs and take down single-targets with stunning strike and have proficiency in all saves and have evasion and get to reroll their saves and cast spells and have a D8 hit dice and have base 20 AC and can BA dodge/disengage/dash while if they get into melee with the same type of enemies you are, they have to spend a spellslot and pray it's enough.
It's not a fair comparison to say wizard gets fireball earlier therefore wizard is better with fireball. That's their schtick, magic.