They also wouldn’t cover e.g. capabilities companies being reckless or violating commitments they made, unless they break some clear law, and even then protections are pretty limited.
An alternative take on this (I haven’t researched this topic myself): https://forum.effectivealtruism.org/posts/LttenWwmRn8LHoDgL/josh-jacobson-s-quick-takes?commentId=ZA2N2LNqQteD5dE4g
I suspect it should be emphasized that you really shouldn’t put much time or effort into your message.
It’s been almost 20 years since I worked for someone in government, so I could be wrong, but even then we simply added to the count of people who wrote in in favor (and recorded it with their name in our database) and didn’t read the note.