I can’t recall the whole family going to a restaurant until I was in my teens, and all of us were at least ten. And it was a bad scene, several of us cutting up enough to cause a mini scene. And that was back in the day.
But heck, I always hated going to restaurants as a kid anyway. Same with every other “adult” activity - I just wanted to be out playing with my friends and catching snakes down at the swamp.
Young children do not want to go to an adult restaurant they would much rather go to McDonald’s, it is the parents who do not want to go there because of all the children running around.
These “Parent” should stop blaming everyone else because they themselves are making decisions that are in THEIR best interests.