Metal bends. Carbon Fiber
I laugh every time I see a Cannondale carbon fiber road bike. Repeat the word "synapse" quickly a few times.
The bikes are fine, as such things go. The material is as well applied there as it is anywhere. Its failure mode is well documented. It stands up to a lot. When it is overloaded, it quits instantly. No big deal. The experts have designed with that in mind. Everything will be fine.
Meanwhile, back in the primitive world of metal, a kid brought his well-trodden Rockhopper in for a few service items and did not even realize he'd been riding around with this nearly-complete crack in the frame, about ready to let the bottom bracket drop off: