They aren't right though, simply because they have incomplete data. You can't judge a person's ability based on out of context, fragmented information. Full stop. I don't even know how this is even an argument.
Furthermore, yesterday someone like-minded to them tried to use this same argument against me using a grey parse on a job I never played while ignoring my reaper had orange parses. So they aren't even using it "objectively" like they claim.