The detail you get is dependent on your prompt and the model you use. The LLM used might not be chatgpt. The level of detail isn't the only thing you should consider. The writing style itself is unmistakably that of an LLM. Also explaining such basic concepts such as pipes is very suspect. Any human browsing this site would assume that everyone is already familiar with them. The nature of the post is such that it mostly appeals to shell enthusiasts anyways. The style shift between the first sentence and the rest of the comment is also quite obvious. The user's other comments do seem genuinely human however.

>oneliners like these

It is literally one pipe. You can't really get simpler than this.