Are you sure about all this?
The y-Chromosone which is the male chromosome should account for the same as your x-chromosone, your maternal side.
Also are you sure about that? Because I know for a fact that if a female wants to test her y-chromosone she cannot use her mother but she needs a male relative that belongs to the same lineage as her father.
Also even if you are correct, I would like to see sources for this since I slept during biology classes and I am a chemical engineer student in private life so don't work with this field anyway, then you are making it too theoretical.
IN reality you have two grandparents on your fathers side and two on your mothers side and that is it. What you say is that the genetics you get from your fathers side is only forming 30% of you or let us say 40% while your mothers is forming the majority.
I quite frankly still don't know how this change the fact that paternal lineage is usually used as your lineage of descent, that determines your ethnic group and obviously surname etc.
Like in 98% of all cultures I know about and have read about then it was always the paternal line that mattered the most. Be it a person of humble background or the migthiest of rulers.