Before cell phones, kids weren’t at risk? If you don’t give them one, they can’t get it themselves?
NO! Follow-up parenting is needed, I am sure. But what you said, Joseph, is out of line. Blogs are also a large part of why kids go off the derech. You are reading a blog. You read others. You are playing with fire.
Chanoch l’naar al pi darko. Be in touch with a Rov, rabbeim and moros. And be an active parent. But following your blanket statement is not going to save any neshamos.