>Oh, they'll do that anyway, once they find the workaround ...

This is assuming the DLP service blocks the request, rather than doing something like logging it and reported to your manager and/or CIO.

>It's purely illusory security, that doesn't protect anything but does levy a constant performance tax on nearly every task.

Because you can't ask deepseek to extract some unstructured data for you? I'm not sure what the alternative is, just let everyone paste info into deepseek? If you found out that your data got leaked because some employee pasted some data into some random third party service, and that the company didn't have any policies/technological measures against it, would your response still be "yeah it's fine, it's purely illusory security"?