There is clear envidence for a “gender pay gap” - in that women get paid on average less than men. Whether that is a bad thing which we need to do something about is a different question, which heavily depends on your overall gender role opinions.
If you control for education, years of experience, and skills there is no such gap.
The question to ask then is why does that happen? Are the reasons for that valid? Are equal opportunities available? Do we even want equal opportunities as a society or an individual?
Because women, more typically than men, raise children as their full time job.
Do we group by job position, skill level, education, experience? And what is "same experience"? In tech, it is usually counted in years, regardless on how many hours you work during the year. Compare to airline pilots where the metric is flight hours. The same kind questions can be asked for all other points. Even the wage can be tweaked. Is it by year? working day? hour? What about pauses, overtime, work at home, commute time, ...
By carefully choosing the metrics, we can say whatever we want.