With respect to an alleged incompatibility issue between a DS cable and class D amplification, I suspect it only arises as a very rare exception for poorly designed class D amplifiers. The allegation is largely based upon the DS cables passing far more information in an extended frequency bandwidth that messes with the switching frequencies of certain class D amps, at least that is my take-away from numerous threads.
On the other hand, Teo Audio liquid metal fluid cables allegedly have a 1GHz+ frequency bandwidth, and I have heard no compatibility issues with using those cables with a class D amp. So I suspect many of the alleged concerns are unwarranted.
Just my two cents.