>but you are likely setting them up for life of social awkwardness and ostracization.

Citation needed.

If you put your kids in homeschooling and provide no other outlet for socialization then sure, they'll be socially awkward.

My brother and I were homeschooled, but we were also heavily involved in our community. We were at the local park playing sports 3-4 times per week, we did various summer camps, we had a few other homeschool families that we'd setup playdates with. Our parents would sometimes joke that we barely ever home! And, unsurprisingly, we had no problems with socializing or making friends later in life.

Was it the same kind of socialization you get from going to public school? No, but I consider that a feature :)