Yeah, I can agree with you there, to a point, but I do hope
over the years, parents learn how to cope with the behavior of their children, by taking more time, learning to handle
children who are misbehaving, with more intelligent methods,
as hitting a child isn't the way to go, but it is harder
to figure out how to do it 'better'.
People have been doing this sort of thing for a long time. I don't think "love" has changed much over the centuries, although I'm sure some people more "progressive" than me might disagree. Although the surrounding environments have changed a lot (new technologies, for example), I doubt that the essence of child raising really has.
I can say that I have a bit of a problem with someone telling me that there is a "new, improved way" to raise children - I don't happen to believe that is possible. After all, the scorecard on child raising gets reset to zero every time a couple has a child for the first time. It's certainly "new" to them, but not to the rest of the world. There are certainly benefits to listening to advice for those who feel they need it to build a sense of confidence, but the final decision on what to do is up to them.
I doubt that there are any perfect parents with perfect children anywhere in the world or in history. We're all human, and we do the best we can.
Having a child is a big, life-changing experience and I remember the moment of my first daughter's birth like it was yesterday. And she'll turn 25 tomorrow! (Now where did THAT quarter century go?!?)