There are many sorts of genjutsu, and are u forgetting even with his shikai activated Aizen has to attack to kill them, even if they're in, Aizen hasn't show enough DC that indicates he can slash apart PS, and character with insane durability, he can't compensate with his current striking strenght to cut apart BM naruto, and adversary of his shikai can be cancelled, yammaoto did it when he got stabbed and cancelling the effect, also stated by gin. And sharingan user can detect the flow of energy being emitted by the shikai. Technically chakra is 50 percent spiritual energy. And there isn't any confirmation wether the jins will be effected like B and naruto, the beasts can guide them if they found out they're stuck inside an illusion, the nature of his shikai gives it away actually. Monster Aizen hasn't show feats with KS nonetheless.
We also have bringer of darkness, and many types of genjutsu in naruto, like KA, and tsukyomi,
bringer of darkness, which hashirama and Madara can use, if they smell the pollen, they will fall to sleep, and also including the Juubi, the Tailed beasts, who have insane DC, including pain. If Aizen got used to shinji's shikai, we can't say how it effect all the verse at once.