Read some of the works of Dr. Jordan Peterson and Dr. Warren Farrell to understand that there are many factors behind gender pay difference and what you are doing with your website is to lead women to believe that we live in a patriarchal society
Pros:I believe the intention behind this product was positive
Cons:Not educating why there is a pay difference but instead pointing out to a number (which is inaccurate as pointed out)
Very good for raising awareness.
Pros:Gives a fair picture of the gender pay gap.
Cons:Could be made more precise by going into further details, but does nevertheless give a good approximation.