Compared to that I'd absolutely say homeschooling (even with occasional events and activities) is quite isolating.
In school you spent 6 hours each day on recess/lunch break? Because I'd argue that in most classes, you aren't exactly supposed to be socializing, but rather, you know, following the class you're in
Socialising doesn't just mean unrelated chatter.
When I sat next to other kids there weren't discussions, there was fighting and stealing my stuff and teachers not reacting because they sat me next to the precious ones who couldn't do anything wrong so "they keep an eye on me" - and then punishing me for my missing stuff. When we had to do projects I was the only one working and the other kids ignoring me on purpose - but somehow that was my fault too and I got a bad grade because "it was supposed to be a team project".
Fuck schools. It's not my fault I was born with ADHD - and if you force me into the school then it's on you to learn to deal with it. But that's not going to happen - and thus homeschooling is the way for my children.
With homeschooling, the parent sees what's happening and can protect their child. Nobody will protect them at school - especially if the school lies to the parents to save face/protect teachers. And nobody will ever pay for the destroyed family relationships this produces.
How is a kid supposed to learn to deal with the uncomfortable situations when everything they do is shut down and punished by a teacher but they don't care about the actual problem and it's perpetrators? How is a 7 year old kid supposed to stand up to the teachers?