The source for this article is a "study" from Chainanlysis which only tracks a handful of the possible illicit activities crypto can be used for. They are tracking scams and rugpulls, adding them together, and using that as the "illicit transactions" metric, then dividing that by a ballooned marked cap to get 0.15%.
Considering 40% of all of Bitpay's transactions are for "Gift Cards" [0] (a la money laundering), it seems to be that this blog is being as charitable as possible to CC to get their numbers.