most of all the carbon parts you see in the wrecks are bodywork, wings, and parts built to break first. The carbon fiber parts on a F1 suspension do not break unless they intend for them to. They have weak parts design to break first like the rod ends or the billet parts the suspension connects to. Hence the reason you see wheel tethers now. F1 has strict safety standards with a lot of parts made to break easily to absorb the impact.
In a A-arm design the lower arm is in tension and the upper is in compression. Carbon fiber is extremely strong in this application. F1 carbon suspension withstand huge amounts of forces. When designed correctly, I would totally trust a carbon suspension on a sled. For instance, you should be able to huck off a 100ft cliff onto a flat landing and the arms would still be good (maybe not your knees or back). However, rapping the arms around a tree might be a different story. For this reason you don't see many carbon bumpers.
Anyhow, I like seeing sled companies really trying to use it but only when used correctly.
Speaking of torsion I am surprised to see that no one has built a carbon jackshaft or driveshaft, that should shed some good rotating mass. hmm..even a carbon brake rotor. It would sure be fun to have $100k+ to build a sled with.