Newman Phase 30 Light VONOA

[alexdi]

Carbon spokes are more rigid and harsh, as they have no give with impacts. Thats good on tarmac, but with MTB you have bumps and hits all the time. This will fatigue you more as wheels will absorb less hits and bumps. With berd the rope spokes can contract, when there are hits from the ground, so it makes the ride feel more compliant and smoother. And with stiff wheels and spokes you have a bigger chance of spokes turning on bigger hits.
I guess light wheels with carbon spokes would make sense on some fast gravel races.

None of this makes sense. Spokes are in tension, not compression. Under load, the bottom two shorten slightly and the remainder stretch just a bit with stiffer rims, on the order of a half-millimeter. This, relative to 50mm of tire travel and 100mm or more of suspension. And a spoke nipple only "turns" (unwinds) if the spoke is completely detensioned (and there's no threadlock, and it's not a locking-style nipple), which, if it happens, would occur with carbon and steel equally because you build both to the same tension. I'd also note that stiffness varies from spoke to spoke. There's at least one carbon spoke on AliExpress with a stress/strain graph nearly identical to CX-Ray, so you can't make categoric statements from the material alone.