Some of this might be due to what would more accurately be described as "devolution" rather than supporting unequivocally the evolutionists claimed version of history over creation.
Yes, and an arguments for why god exist might be illogical, the ICR website might be lying, your favored political party might consist of crypto-nazis and your neighbor might be a murderer. The word "might" is not worth a lot in a conversation about what is.
Rather than speculating that Coftys argument might suffer from this or that why not focus on what is the case? is this a case of "de-evolution"? In which case is it then not the case this organism "de-evolved" new genetic information responsible for a new metabolic pathway?