"whiteness" is a pathetic construct in a way that no other ethnicity is, a void of identity, and nobody should want to be part of it.

Did you ever address this? There are numerous people with light skin who do not fall under the category of "white" because it is a fabricated race category based on historical privilege. As for the "systemic" argument, this seems to just be wordplay mixing systemic context with systemic enforcement? When people talk about systemic racism, they're talking about racism enforced by the system (government, police/prisons, ordinary institutions), whereas the racism being discussed is found in interactions, and even if you took a white and a black person to a deserted island where there would be no material forces from the outset creating oppression of one by the other, the white's racism still takes on a historical/systemic context in the race relations evoked. And yet there is no state apparatus/system in place to enforce discrimination. So clearly "racism" and "systemic racism" do not mean the same thing.