Just because you are putting a child in a siloed environment doesn’t mean you’re teaching them that everyone else is beneath them.
If you are homeschooling and not teaching humility, kindness, etc then you’re doing it wrong.
- parent of 6 homeschooled kids
I have yet to see or hear any "othering" of their friends. In fact, I'd say the breadth of different social situations they are exposed to makes the "othering" less likely.
I'd send my kids private, but no way would I isolate them with home schooling. You're meant to do that on evenings and weekends anyway.
Can the opposite happen? Yes, I've seen it personally. My home schooled nephews know and are known by everyone in their village and surroundings. Sometimes I feel at 6 and 8 years old they have more diverse professional connections and acquaintances than I have right now.
To your second point: I think the best predictor of success in any education setting is intentionality and involvement from the parents. That said, with home school you get nights and weekends AND days to spend in whatever way is most optimal for your kids.