Neglect is just, unfortunately, neglect, and I'm sorry you had to go through that.
I really hope you won't continue discouraging homeschooling for your friends' kids. It can clearly be a great experience for a child, if the parents are dedicated to putting in the work to make it so.
Most homeschoolers consider unschooling no better than letting a child choose what to eat for dinner. Candy instead of veggies? Sure, if that's what you want, your body knows best! Most homeschoolers (parents) are far more deliberate in their choice of curriculum and the need for children to get used to spending some of their time doing what they need to do, not just always doing what they feel like doing. It's just that, if done right, the "doing what you have to do" time is actually useful work, not just "draw a picture of each science word and be creative!" tedious, time-wasting busywork. And with this increased efficiency (if it works), kids can end up with more time to do what they feel like than kids in regular school. That doesn't make it "unschooling", though, because that's the dessert, not the whole meal.
Unschooled adults I've met all had very busy social lives as children.
No. The parent commenter clearly mentioned “Never heard of this Unschool term”.
The parent commenter then went on to talk about their experience with a different topic - essentially lack of schooling.
Just because the names sound related doesn’t mean they are the same thing.