How about responding to the points I made, rather those you believe I secretly made where you can't see them and only can guess at their meaning?
I was pointing out the points you made were less to do with what I actually said and more to do with your imagination.
And it is a modern cultural invention. The fetishization of Whiteness can by definition only go back for as far as Whiteness has existed.
Before there was capital W "Whiteness", there were people in Europe with light coloured skin who were the forebears of people today considered, for want of a better word, white.
Is it difficult to understand that people with fair skin were desired and that someone may refer to such people as 'white' in a very short and informal forum post and assume that the reader has sufficient intelligence to understand that this is not a reference to the modern concept of Whiteness (whatever that is supposed to mean)?
(Alternatively, if it helps, if someone talks of 'European peoples like the Vikings or Franks' would you find it
impossible to comprehend that they may not actually suggesting that Europe was a meaningful and cohesive geo-political unit in the 9th C, but simply that these people came from the region we today know as Europe)
Tell me, which of these two women would you consider "white" by modern standards:
Seeing as you asked, and couldn't be more wrong about my actual views...
I consider monochromatic distinctions of race like "White" and "Person of Colour" (or 'white' and 'diverse') as meaningless if not outright racist. I'd be more than happy if they were never used again, but until then they sometimes suffice as a crude shorthand for ease of communication.
Many Berbers with pale skin and blue eyes would be 'whiter' than someone from Southern France, yet are still "brown POC" as they are "Africans".
Which Eastern Mediterranean people are 'white'? Greeks, 'Turks', Levantine 'Arabs', Palestinian 'Jews'? (these populations all have very similar genetic profiles, yet some would be 'brown' POC and others 'white' Southern Europeans based on modern political geography and historical colonialism).
It's like the dumb "Jesus was a brown Middle Easterner" trope. Based on speculative population genetics, you could just as easily say "Jesus was likely as white as a Southern European". Trying to say if Jesus would likely have been 'white' or a 'POC' is a very silly thing to do though.
The distinction between "white" Europe and "Brown" Middle East and North Africa ignores the fact that the Med was the historically linked civilisation with commonalities, and North Europe was a separate entity (well multiple separate entities).