Except they were responding to a comment criticizing USB-C PD as a standard. Non-standard cables are irrelevant to that discussion.
Is the part of the GP comment I was responding to. The connectors form part of the standard. There’s no way to identify a standards-conforming cable from a non-standards-conforming cable by looking at it. They all look the same.
You plug in a USB-C cable, you might get a quick charge. You might not. Unless you have a USB-C power meter, you have no way to tell unless you know how quickly your device should charge in 5, 10 or 15 minutes, and hang around to wait and see if it does or not.
I think there’s a meaningful difference there!