I listened to this speech and I have to say I agree with what Rabbi Wallertein was saying. His main point- to get of the internet was the moral of the story. Any experienced, computer savvy person can hack into your email or Facebook account and get all your information without ‘friending’ you first. You dont have to talk to a stranger for them to find out your personal information.
What you are saying is extremely true and I agree with you 100%. But the Internet is an extremely dangerous place even if you ‘don’t talk to strangers’.