"This doesn't make sense to me"

That is why I posted that picture so that you could see what I meant about rocks on the PitchLock ( the two CarbonFiber struts (black inside the sleeve) and the TripTease (yellow guyline) combination form the Pitch Lock corner)
If you have rocks with jugged edges there ,the wind can cause the guyline to rub and eventually break.
So make sure you either have rocks with a smooth surface there (not like my bricks...) or put something in between to protect the guylines ( cloth /stuffsack/spare socks if you have to...)