Are you referring to taking keys and a butter knife to the natural titanium or the space black titanium? The space black titanium has a DLC coating, the natural titanium does not.
Right, it’s been established the space black titanium has DLC. But to your question, that member used a knife to etch the casing on the space black titanium, claiming that it couldn’t damage the casing where the marks would essentially wipe off. FTR, the natural Ti only includes a fingerprint/smudge coating.