When someone says they have no time for more friends, but still maintains large groups of friends around them, it can be an indication of several things:
Prioritization: The person might be indicating that they already have a full schedule and limited time for socializing, but they make an effort to maintain existing friendships because those connections are significant to them. They may not have the capacity to add new friends into their life at the moment, but they value and invest in the relationships they already have.
Social boundaries: Some individuals, even extroverts, have their limits when it comes to forming close connections. While they may enjoy being in the company of many people, they might only have a select few with whom they share deeper emotional bonds. So, when they say they have no time for more friends, they might mean that they are not actively seeking to deepen their social circle beyond the existing close connections.
Comfortable social environment: People who are extroverted tend to thrive in social settings and often enjoy the company of many acquaintances or casual friends. However, they may not necessarily have the bandwidth to establish and maintain intense one-on-one friendships with numerous individuals.
Time management: The statement might also be a way of saying that their schedule is already packed with various commitments, activities, and responsibilities, leaving limited free time to build new friendships.
It's important to remember that everyone's social needs and preferences are different. Some extroverts prefer having a large network of acquaintances, while others might have a smaller group of close friends. Regardless of the size of their social circle, the key is that they find fulfillment and happiness in their relationships.