Myself and my husband were both homeschooled and we are very out going. I will literally talk to anyone.
My kids are no different. In fact I keep having to have a talk with my oldest daughter that 'just because Mommy talks to someone. It doesn't mean Mommy knows them or that you should talk to them. And or tell them absolutely everything you know.' We have this talk almost every time we leave the house.
Not sure about the rest of the homeschooling population, but it has definitely not made my kids shy. They will literally talk to anyone about anything. Lol