I have never worked in a company where females were paid less for the same role and same years of service/experience levels.
If anything women are treated better than men in aviation because it looks good to have them on board. All things being equal, in the western world, they are far more likely to get a flying position than men for this reason.
Women just tend not to choose this profession very often. Easyjet would do well to say that they are looking to hire a representative amount of female pilots after all checks and standards have been met accordingly. To set an “arbitrary” target figure reeks of favoritism. If only 5% of pilots are women, wouldn’t females be way overrepresented if one company consists of 20% women?
I also doubt women would like to be cherry picked for positions because of what is between their legs compared to the standard of job they deliver. As any good pilot and decent human being would.