Embedded taxes represent all taxes, including those paid by employees, according to the man who did your research. The only way to remove these costs is for employees to take pay cuts.
Embedded taxes do not represent taxes paid by employees. I still cannot understand how anyone with even a rudimentary understanding of economics believes this. Taxes paid by employees in the form of income taxes come from wages paid by the employer. The 23% has absolutely nothing to do with those wages. Do the wages affaect the overall price? Yes. But they are not part of the 23% of taxes embedded in the cost of products. The 23% comes from taxes paid by the employer and by the employer alone.