When you're interacting with something "alone" like a hobby or book, or even an online post, it's something you have control over to an extent, you can walk awa

When you're interacting with something "alone" like a hobby or book, or even an online post, it's something you have control over to an extent, you can walk away from it with no consequences if you need a minute to think. With people, their preferences and feelings must be factored into all decisions you make as a group, and people often become impatient with you if you cannot answer them fast enough. To your other point, there are also more introverts now because there are more only children, which is also due to the technological advancement of reproductive control.