I mirror what you're saying but non-gentle parenting along with corporal punishment can take a strong psychological toll on a child (speaking from experience). It took me quite a while to find my voice because I a had not-so-great childhood all in the name of obedience and discipline.
But I also see, the new generation of parents taking gentle parenting to an extreme raising feral iPad kids who call their moms a bitch.
I really don't think there's an optimal framework for proper parenting but a firm hand delivered gently and logically seems to be a good starting point.