It’s true, it can be done. It has been done succesfully. But learning to read is still best learned at home, before going to school
Not doing so doesn't mean parents have abdicated their responsibilities...which is pretty much what you've stated.
Some parents have no idea how to teach reading which is why they send their children to school.
And what about the parents themselves who can't read because THEIR schooling was inadequate? How are they supposed to teach their children to read?
Don't backpedal now.