One must take that in context. Despite the engines possesing powers of reasoning and critical thinking, it's important to recognise that those aren't as advance

One must take that in context. Despite the engines possesing powers of reasoning and critical thinking, it's important to recognise that those aren't as advanced as a human. It is likely that they also don't feel emotions like shame as strongly. The engines appear to have the intellectual and emotional capacity of an 8 year old human.