I most certainly use it in an almost endearing way.
My first days as a mum were some of most memorable of my life. Those days where I thought if I didn't LOOK at DS almost constanly, he might not breathe, when the thought of leaving my DS in the nursery (Both of my children were born in The Portland, so staff on hand 24/7 to take care of the baby if you need to sleep).
They are so memorable BECAUSE everything was so raw, swining from one extreme to the other (I remember, quite vivdly, crying uncontrollably because DS had... a touch of jaundice. As another poster said, I wanted everything about my gorgeous, gorgeous baby to be perfect.
I stayed in hospital for 5 days , just me and DS, savouring every moment. Taking photos of him every 5 minutes and thinking he looked more and more gorgeous in each one. (Upon reflection, he looked like most babies do: A bit alien!! )
With DD, I was PREPARED. I was home again after 2 days and ready to be a family.
So, IMHO, PFB is not a patronising term and, again my humble opinion, ought to be celebrated.
And, yes, I possibly am one reason backpacks now come with no skiing safety guidelines!!