Somehow my son grew up just fine in this environment

I wonder at what point it turned though? I suspect that your son is a little bit older. But the neighbours kid (now 16) for example was in a school whatsapp group with boys and girls when he was 11, sending dick and pussy pics to each other.

Also, I deviously refuse to upgrade her old and super slow phone under pretenses that it is super ruggedized and iPhones cannot compare...

:D