Yeah I also believe it’s a big nothing burger. There are far worse things these AI labs have done, detecting when Chinese labs are using Claude Code is not it.
How do you know simple detection was the most Anthropic did and nothing more actively nefarious? The self-reposrted motivation was animus against "distillation attacks", which suggests active server-side countermeasures that could range from the overt (IP or user account bans) to covert (downgrading model performance or poisoning the response)