The act of oppression lacks positive moral value, in my opinion. Therefore an oppressor lacks positive moral value. I do not reject that and do not attempt to justify rejecting it.
I’m confused with the whole line of questioning, so please do retain the initiative.
No. There is a subtle difference between who they identify with/what they identify as and their identity. The former construction specifies that it is up to the person. The latter construction does not.
A person can identify themself as a Martian and be wrong about their identity. If I say that person is wrong about their identity, I can still say they identify themself as a Martian without contradicting myself.
(You can insert any word for “Martian”.)
~Max