Looks more like crappy gasoline
Yup. Oil doesn't usually cause that type of dry deposit, and even if it did oil is not supposed to be in the combustion chamber in any significant amounts. Blaming a brand of oil for poor combustion or for leaking valve stem seals or other failures caused strictly by the lousy parts in the engine or trans seems to be a popular pastime though.
Carbon deposits are to be expected in any engine, and in a Harley CVO hemi they tend to be even worse since there isn't great turbulence in the combustion chamber. Running rich mixtures (which many folks do just because it's common knowledge you have to run a Harley really rich

) also contributes a great deal to heavy carbon deposits. And of course if you believe all the advertising hype from the gasoline marketer's, there is a big difference if you have the super duper nitrogen enriched detergent system of brand S versus the cheap crap from brand B. And then we have the too numerous to mention additives that should be thrown in at every fill-up to avoid just such a deposit nightmare. Obviously that engine didn't get a regular dose of the good stuff.
Once again, if we were to avoid every brand of oil that someone was using when their POS Harley engine or trans failed, we would all be unable to ride since we wouldn't have any oil in our engines or transmissions. Put the blame where it belongs folks, not on the brand of oil.
Jerry