Given how important most people feel school is for children's social development, it may seem ironic that my main reason for home educating my eldest child was that they were so sociable! My kid wanted to play with others pretty much all day every day, and school would have interfered with that. I did give them the option of going to school, but they were shocked to learn that that would mean spending most of their time with kids of exactly their own age and that part of the time they would be expected to sit quietly 😂.
We don't live in a very rural area, so there were plenty of home ed meet-ups on offer, and DC1 could have friends round for all-day playdates as often as they liked. When you have plenty of time and there aren't dozens of other children to distract, interrupt, and judge you, you get a different type of play. They could plan really ambitious projects, fall out and make up, negotiate their differences, play everything they wanted to play, and be open with each other without fear of criticism from onlookers. (Twelve year olds don't bring their stuffed toys to school because somebody is going to take the mickey. But plenty of twelve year olds do have toys and enjoy playing with them. At home, their best friend may or may not be interested in playing with those toys, but they don't give them a hard time over it.)
DC1 did try school in Y5 just to see what it was like. I thought they'd like the social side of it even if they disliked the work. Surely such an extraverted child would enjoy being surrounded by other kids for 30 hours a week? But to my surprise, they felt the main drawback was the restrictions school put on their social life and independence, so they left after a term.
My second child was in some ways the opposite to her sibling, not very keen on playing with other kids at an early age, disliking crowds, a late bloomer who got on better with children younger than herself and who needed some coaching from adults to learn to negotiate friendships. For her too, home education gave more flexibility in social terms.
She has grown from a quirky little kid into a quirky teen who has high self-esteem because she is used to being accepted for who she is. She's friendly and well-liked. No doubt some would call her sheltered, because she has always had ready access to her mum and other people who care about her. But I think it has been good for her to grow up with the expectation that people will usually treat her well and that she deserves kindness and respect. I am not convinced that a kid with a moderate learning disability would emerge from a mainstream secondary school with the same belief. It's true she isn't yet independent, but there's no hurry. She'll get there in her own time.