The best man at my wedding was a friend I played video games with that I met online (in "clans"). In fact, I'm sitting in a Discord server right now with about ten people that I've sat in a chat server of some sort since I was 14 years old (I'm 34 now). We meet up several times a year at different locations for vacations. Some of us now live close together and regularly hang out with each other's wives and kids. We still game together on a near nightly basis.
Maybe the relationships are only superficial and shallow if that's the level of effort you put into them.
WoW, by far the most successful and influential MMORPG ever made, has a large API surface for displaying in-game information and automating certain actions, and it has a large mod scene that takes advantage of it.
It's absolutely understandable why kids gravitate to these online worlds but I regret the time lost in games and if I could go back I'd really limit my gaming to brief, enjoyable sessions, and invest my energy to more challenging and ultimately rewarding things. Building skills, building real relationships.
[1] https://www.bbc.com/news/education-46019429