No yikes. This is a standard response - deflect and deny when caught. China is engaged in all sorts of cyber warfare, and it's making hardware choice difficult. You have to scrub every device, and even then you have to observe network traffic to see if there are hidden systems trying to phone Beijing.
I don’t follow? The accusation is that their point of sale terminals were used as launching off points for attacks. Why would someone need to know “how their servers are being handled internally” to know an attack came from one of their devices installed locally.