This is just crazy.
Yep, it sure is crazy the way you are twisting things around.
Well, I'll give you this: When you make up your mind about how philosophers just twist stuff, you don't quit.
(The truth hurts those who don't like truth!)
Here's a truth: Aquinas doesn't think there's a 'self' which 'has' a 'soul'. A soul is not a thing to be had because a "substantial form" is not a thing.
I don't think there's a way to criticize a philosophical theologian like Aquinas if one doesn't go deeply into the philosophy.
Not everybody needs to do that, but those who don't have as much business judging Aquinas as I have judging NASCAR drivers -- which is to say, none.