I’ve had cascade mountain tech poles for 8-10 years with 50 or so days of use per year. I’ve broken one, but it wasn’t a fault of the pole. We were backpacking and had 5-6 dogs (all Brittany’s) with us, I was the first to the top of a rocky knob. Dogs all darted as we hit the top, there was a fresh elk calf bedded and mom was on the far hillside trying to lure us away. I had to use my poles to beat the dogs off the calf and broke the middle section I think. My friend borrowing a set did break the bottom section when his pole was between two boulders and he lost his balance pushing sideways on the pole.
Outside of those two instances absolute zero issues. I can say with confidence any other carbon pole regardless of brand would have broken in those two scenarios. Maybe aluminum would have bent or maybe it would have kinked and broke.
The nice thing about cascade mountain tech is for a reasonable price you can order replacement individual pole sections. So I still have two complete sets of 100%!functioning poles.
And I ordered an extra bottom section that I use for a tall center pole by removing a bottom pole section.