Idk, never really had that strong of a drive for socialization of friend making. Got the recluse variation of asd.
Whatever daily chitchat happens at regular places, like work, gym, home, is more than enough to overfill any interaction need coupled with whatever discussions/arguments happen here and that's it, whatever low need there is s completely satisfied.
I'm fairly sure my vocal cords have even atrophied over the years. Just few weeks ago for a short while i had to teach a new person at work and i lost my voice and throat was sore for few days afterwards.
Though i assume there's some deeper family trait in it as well. From fathers side of my family, great grandfather spoke handful of words per week. Grandfather just mumbled or grunted. Father was the chattiest one, few sentences per day, same with uncle, same with my brother.
Don't know about mothers side family.