Goethe, you missed a few things yourself:

"...have no inherent natural right to interfere in my private business (which includes my offspring's)..."
Your private business DOES NOT include your offspring, unless you view your offspring as your personal property- as demeaning and degrading a viewpoint as anyone can imagine. Do you also advocate slave ownership?

"...an appropriation of parental authority to then be able to bestow. I regard that behaviour as an act of provocation and attempted usurpation of my parental authority..."
Twice you used the phrase "parental authority". What parental authority?
Not a mention of parental responsibility.

Dude, you have NO inherent authority over another human being, unless you are a jailer or slaveowner or something equally reprehensible.

Repeat after me:
Children are not property.
Children are not property.
Children are not property.

You'll get it, eventually.