Philip Zimbardo, the psychologist behind the Stanford Prison Experiment, seems to think so. He has written a couple of books on the subject of deteriorating development of young men, and has suggested a correlation to the advent of high-speed internet.
Not sure if he's right, but it's certainly a reasonable theory.
He also did a TED talk briefly touching on the subject.
https://www.ted.com/talks/philip_zimbardo_the_demise_of_guys