where is the fatwa that says that the wali cannot reject the suitor due to race or ethnicity? and what is the name of one of these scholars that has issued such a ruling? I don't think any scholar from over a hundred years ago ever issued such a ruling.
saying that religiosity is the most important thing is not the same as ruling "a parent cannot reject a potential spouse for their daughter in Islam due to race or ethnicity".
that is something you made up. I don't think any of those scholars ever mentioned any such rule and there is nothing backing your claim.
As I said before- "Mufti Menk might say it's "unislamic and racist" but the father has the right to reject the suitor regardless. Someone might argue he shouldn't but legally he can. The decision is his."
Here is a very clear declaration: