In the video, he refers to Egyptians and Pharaohs. I assume that @CoturnixComplex is referring to the Egyptians as Roux.The Roux female is not used in sex links because she cannot pass her Roux gene on to her daughters. She will pass her Roux gene to all of her male offspring. All of the Pharaoh males produced by your planned mating will have a single hidden Roux gene. All of the Roux males produced from your planned mating will be pure Roux since they have to have two copies for the trait to be shown. All of the Pharaoh females produced will be pure Pharaohs because if they had one Roux gene they would be Roux. All of the Roux females will be Roux.
Since there will be both sexes of each variety, they will not be sex linked.
For sex links to work, they only work for the first generation. They also only work using the male homozygous for the recessive gene being crossed with the female that is showing the dominant trait. Breeding the female with the recessive sex linked trait to a male with the dominant trait with only produce offspring with the dominant trait. The female offspring will be pure for the dominant trait while the male offspring will be phenotypically the dominant trait but genotypically they will be heterozygous for the recessive trait.