My guess is that most parents do a bad job when compared to the platonic ideal of a parent people may think others have.
The implication being, that if one got through childhood without immediately obvious signs of abuse/neglect then their childhood may not have been as bad they think.
I grew up in the most liberal/educated part of my country and us children would laugh at lunch time about how getting beaten by a belt was so much better than a hanger.
Daily home rules were stricter than what western kids go through when grounded and saying no to their orders was not even an option. (for most)
I grew being occasional beaten by hand and stick. Strict rules were the norm and I never had sleepovers at friends or the like. But, my family allowed me to choose my career, they made huge sacrifices for me, and above all genuinely loved me.
The physical beatings and restriction on freedoms would have gotten CPS called on them in the west. But, I personally have a great great relationship with them and honestly, think I had pretty good parents as compared to my country's average.
People underestimate how many children get a shitty childhood. I will take my imperfect parents over what many of my peers had.
Not sure I follow this logic.