Yes, so there might be this cause and effect, but this is not a correlation, i.e. we haven't seen data, they may well be more well rounded individuals being home-schooled because there are more parents who decided home schooling as a way to enhance education.
Depends on the particular community of course, but ours is good for that.
Homeschooling is not largely populated by people with "extremist" beliefs. Such people are too low in number to be largely populating anything.
5 million parents in the US were officially homeschooling their kids as of the latest Pulse survey (done during COVID pandemic to see changes in families). [1]
There are about 56 million students attending school in the US right now [2]
So about 10% of kids are homeschooled. That's not mainstream but it's not such a small minority to be discounted, nor is it small enough to be largely populated by extremists.
1 https://hslda.org/post/census-data-shows-phenomenal-homescho...