You are completely missing the point. Warrior NPCs can do a just fine job of mopping up the blind/nauseated enemies. Seriously, they can.
Yes, they can. And then you're playing... how many characters, now? There is no difference except power level and utility between a Fighter doing the killing, or a Druid or Cleric or Pun-pun in the same party role. MY point is that a wizard cannot do it alone, especially at lower levels. Action economy simply prevents it.
Actually, there is a difference. The difference is that the Druid and Cleric provide actual utility to the party, whereas the fighter saps XP and loot. Fighters are not worth including in any way that saps XP and loot.
2) Wizards can easily do it alone, especially at levels past 7, but even at low levels, if they are going to be alone, they will be prepared for that instead of using tactics that allow for piddly shit.
Here are some ways that Wizard solo character can use his class features to completely replace the "hit crippled shit" role.
Low levels 1-3:
1) Enemies are helpless after failing saving throw: Bring a Scythe.
2) Switch Familiar for 1/2 level animal companion.
3) spend hundred of GP in bolts shooting at stuff with your to hit only -3 of an actual fighter. (Easily made up for by them being blind.)
4) Hire a level 1 Warrior for 10gp a day. Maybe 2-3.
Still low levels 4-6:
1) Familiar for AC.
2) Hire NPCs.
3) Spend gp shooting at -5 to normal characters.
Level 7:
1) Congratulations, you now have 3-4 Ogre Skeletons. You don't care about the stupid beatstick.
Level 9: You can now Astral Project yourself, and get tons of useful outsiders to do some "kill that crippled bitch" work for you.
Level 11: No one cares, you are God.
So yes, Wizards can do it on their own. However, as fun a diversion as that is, it's not the point.
The point is that in an actual world dictated by the rules as presented in the Core D&D books, a Wizard and a Cleric, when presented with a "Fighter" asking to join their team, should laugh, call him a damn fool, and go looking for someone who actually matters, like another Cleric, a Druid, A rogue, hell, even a Bard if they are really desperate for that +4, but certainly not a Fighter.
Also Kaelik I must ask again. Do you accept positive or negative fu?
I'll accept anything, mostly because I don't think there is a way to not accept fu, but I'm not terribly concerned about my Fu.