Your thinking stops short at that first step. You’re thinking people won’t bother to connect socially when they’re playing for the solo experience, but while that might be true now, it won’t necessarily be like that with other social designs in place, such as a mentorship program.
It’s true as you mentioned earlier that the game kind of requires looking up a lot of stuff using 3rd party sources if one wants to succeed, but the game design is essentially leaving too much of that for other sources.
It’s hard to explain, but there’s a networking effect that occurs if the social design is done better, where more people branch out and enjoy doing so, if it happens in a good way.
So when the “loner experience” is what counts as normal, that’s when it’s done poorly. But with better social systems in place, it’ll change that norm for the better, and making people get used to other kinds of social interactions.
Which brings us to that mentorship program stuff, as you said, the game requires looking up a lot at 3rd party sources to get ahead right now. But if that would be handled socially instead, through mentorship programs, it’d both foster a more socially interactive environment by design, as well as encourage help becoming a key part of those interactions, which makes it easier to socially bond.
Which in turn can have ripple effects, making people choose to talk to the people they’ve bonded with instead of just jumping into a queue straight away, and maybe even do something together, and so on. The mentoring isn’t done over night, after all.
So it changes the way the game is enjoyed, because then it’s done between people that’s on the road to becoming pals, instead of just silent strangers that expects you to know everything already. Which also makes it easier to develop your own skills if you’re the one being mentored, since you’ve got someone holding your hand and helping you along the way.
On a grand scale, it leads to more informal teams shaping up, as well as a good chance of new friendships forming if there’s a shared interest between them, such as having the same IRL hobby or the same taste in movies or shows, and so on.
So when you say that you think it won’t get people to move out of their shell, I’d argue that’d only hold true for a small amount of people. Because we are social animals after all, and given the right circumstances, then people won’t feel bad for being put in social situations.
It depends on how such a mentorship program would look as well of course, but that’s up to the designers to solve.