While that is true, if she does not like the rooster she will have more male offspring, some hens even expel the semen after mating if they do not like the rooster.
Yes, I have since I took care to have more relaxed hens. With my wonderful Kraienköppe I had mostly female chicks, last hatch was 2.14 = 2 male and 14 female.
I have had just one exception to the rule: Many years ago, the most dominant of my Black Copper Marans hens generated during all her 7,5 years male offspring only.
Do you only hatch your own eggs? If so, resulting much more male than female offspring might be caused by stressed hens.
From my experience stressed hens have mostly male offspring, relaxed hens mostly female.
The stressors can be diverse, a rowdy rooster they do not like, or more than one...