Yes, I think it is. No matter how much you protect your hair, some breakage will happen in the regular comings and goings of life cuz nothing lasts forever! Happens to everybody methinks. That's just life. However your goal is to minimize breakage, esp that which is caused by "user error" on your part. A little common sense, patience, a lighter hand, and more knowledge/acceptance of your texture and what it does all helps to minimize breakge, but some will occur just like no matter how careful you are w/ you nails, eventually (at least) one will break.
Shrug
Ya win some, ya lose some....but breaking even or better yet coming out ahead is the goal!