Any frum teen who lives in a family with 6 or more kids, or had spent Yuntif bunking in with 24+ assorted relatives and guest, or gone to a school Shabbaton has already gained the ‘sociable’ skills that 4-7 weeks in a camp bunk bring.
The comment is a false front. What is really means is the teen’s parents can’t (or won’t) afford to send the teen to sleep-a-way camp.
BTW>>>My parents met at Sleep-a-way camp back in 1932. My wife and I met at Sleep-a-way camp in 1970. My niece and her husband met at sleep-a-way camp in 1990. All of us were staff, not campers at the time.