My children are homeschooled in a major metro area not in Texas. We also have effectively zero oversight. But what does it signify? We have an interest in the success of our children that is far greater than any interest a government has.
I understand that in rural areas this can mean that such children have all but disappeared from view, but where we live the school districts allow homeschool children to participate in afterschool activities (including competitive sports) and a recent change in state law allows for homeschool children to attend a class or two at the local school and then leave for the day, if that is something a parent wants. The park district offers many sports classes in the middle of the day for homeschool kids, forest preserves and state parks offer nature classes, and museums have science and art courses. Private businesses love us, they offer discounts to fill up time slots that would otherwise go empty. The public library is very welcoming and typically allows use of community rooms for free.
A public school classroom with 30+ children in it simply doesn't have the time to offer as much educational opportunity that our children get in half the time, allowing them so much time during the day for play, imagination, and reading or exploring topics of their own choice (we typically have 30-60 library books at home at any one point in time).