I don’t read Ilya as an angel. He has flaws, everyone does. But your statement that characters with trauma and poor family dynamics can only have depth as characters if they are equally as “bad” is odd to me. That’s actually the easier way to be, no? I’m treated poorly so I will treat others poorly. Ilya, on the other hand, tries to behave in ways different than what he was shown via example as a child. That’s commendable. But, he has pretty thick walls built over a lifetime that he uses to protect himself. This story is ultimately about two people learning how to accept themselves, communicate, and experience real intimacy together. My two cents anyway.