Earlier quoted context omitted.
You are arguing against an imaginary argument. Parent and grand parent comment did not say anything about genetics. Darwin could go inside the study because his gender role was fulfilled by being rich. Had he been poor he might have said "I will be in the coal mine", and getting slowly and horrible killed. Very few know people in history had the privilege to freely obsess over things which is outside their gender rol…
This whole subthread is speculation about the role of gender in the choice of obsessive hobbies, or am I imagining that? I agree with you that most men over the course of history did not have the luxury that Darwin did.
zozbot234 comment below that said "I don't think this is the case.", arguing instead that low visibility over gender lines makes people think that gender has an impact how obsessive a person is.
rhlsthrm comment below that one said "This is exactly right".
This is why I said parent and grandparent, ie zozbot234 and rhlsthrm comments, did not include genetics in their arguments, and I interpreted your comment as arguing against them as if they had argued in favor of genetics. If I am wrong and you directed your argument against the grandgrandparent then I am sorry for that interpretation.