I wouldn't be mean about it. I'm imagining adding a line to the email such as:
> (Yes, I know this is annoying, but it's required by our insurance company.)
What is the insurance company going to do, jack up our rates because we accurately stated what their policy was?
I'm not saying you're wrong, I've never worked in a company this large (except for a brief internship), or in IT specifically. But also, like, come on people, grow up.
It would've gone from the insurer to the legal team, to the GRC team, to the enterprise security team, to the IT engineering team, to the IT support team, and then to the user.
Steps #1 to #4 can (and do) introduce their own requirements, or interpret other requirements in novel ways, and you'd be #5 in the chain.