Most videogames don’t do anything to segregate kids from adults (or make sure things stay kid appropriate) and don’t really make the space with kids in mind. They make the space with revenue in mind.
Most videogames, especially with voice chat, you might get an 8 year old saying this is his first time alongside a crochety neckbeard screaming about banging that kids mother
There were plenty of old collaborative and encouraging spaces even from the very early days. The message boards and forums were full of helpful and supportive people wanting to relax and just talk about their interests.