I totally agree Anna that they are linked but i think you can be a gentle parent and not use cloth, or not be able to breast feed.

I use cloth, i breastfeed beyond the norm, i don't co-sleep, i do BLS and i believe in gentle parenting.
I have a friend who formula feeds, co-sleeps, uses cloth, didn't do BLS and she follows gentle parenting techniques.
So although they are commonly linked they are not co-dependent.