From that moment, I made a firm decision: In our household, there are rules, boundaries, consequences, respect and good manners.
That's gentle parenting.
Some would say that’s authoritative
Because it is authoritative parenting, also known as gentle parenting. Perhaps the author is confusing authoritative with authoritarian?
In all - a poorly-researched, poorly-written article, but it'll be popular with the "back in my day" mumsnetters who think every drug dealer, gang member and ne'er do well they encounter must have been gentle parented.