Some people say shave or no shave hair also same. A NB will naturally shed the "womb hair" to give way to the new hair.
As for my girl, we gave her a clean shave when she was 4 months because her scalp was itching and we wanted to see what's the problem. I just used a razor and do it for her at home while my hubby tried to keep her head still with her favourite rattle.
I think naturally, if you shave your hair, like leg, armpits, arms, you can expect them to grow out thick and dense. So probably that's the same logic.
Your hubby heart pain huh