This is extremely presumptive and dismissive. Also living with your parents isn't necessary an indicator of a social reclusve.
Assuming you mean living with your parents in their house, it pretty much is. It's different if you have an elderly parent living with you in your house.
Anyone in his 30s and living with his parents is going to have constrained social opportunities unless he's some kind of royalty.
By the time my cousin got married, he was in his 30s and had lived at home all his life. He bought a condo immediately with his savings for him and his wife to move into.
My best friend lived at home until he paid off his student loans after which he saved enough for a down payment for a condo.
My other friend lived at home till her 30s, when she got married and moved in with her husband.
My other best friend is living at an apartment with his parents, and has a steady girlfriend as well as thriving businesses.
For some people I don't doubt living at home with your parents would be awful for development, but there's so many ways to live life that I would never generalize the outcomes without fully considering the circumstances.
Anyone in his 30s and living with his parents is going to have constrained social opportunities unless he's some kind of royalty.
If you earn money, then you're independent enough. That's enough for me. It's a bit embarrassing to admit that you live with your parents, but ultimately so what?
What I said is I've seen this "exact attitude with individuals" (as in some individuals, not all.) For example, my daughter's kindergarten teacher lives with his parents, and I have absolutely no issue with it. However, I do know someone who is well into their 30s that is living with their parents because every job they've ever had did not "treat them well enough", in many cases they lasted less than a week, and their parents continue to allow them to basically get away with not working.
Worse yet, I work with a handful of guys who are making $22-28/hour to do a $20/hour job and they can't stop complaining about how boring and repetitive it is. For most of them, they went to trade school and have no idea how good they have it at this company.
If I'm not getting paid what I'm worth, I move on. If I can't find someone to pay me what I think I'm worth, I reevaluate my skillset. If no one is willing to pay you what you think you're worth, you're probably not worth that. And if a job is paying you more than the going rate for your skill, you shut up and do a damn good job.
And, finally, maybe it's how I was raised, but whatever I'm doing - whether it's beneath me or doesn't pay shit - I do a damn good job, because if I'm going to do something, I do it right.