Debunked time and time again. The oft-quoted "70%" stat is referring to all men vs all women. Within the same job, the pay is much closer to 95%. Any difference is still worth understanding and closing, but there are plenty of pretty reasonable explanations for why a 5% pay disparity may exist between men and women.
If women have even roughly equal access to the same jobs, your point is a good one. If not, it is missing some nuance.
It’s fair to say both are. GP is strongly implying women get paid 70% for the same work (illegal in the UK at least) whereas P misses the subtlety that women don’t have equal access to the job market. Compare the rates of women in software engineering vs childcare. Then compare the salaries.