Personally, it is one of the flags, yeah. It's been a while since I've tried ChatGPT or some of the others, but the structure and particular usage felt a lot like what I'd have gotten out of deepseek.
It's not a binary thing, of course, but it's definitely an LLM smell, IMO.
It's not a binary thing, of course, but it's definitely an LLM smell, IMO.