OK, so the risk were worried about here is internal communications platforms, only available inside an organization like the EU or a company, being used for sharing CSAM? So officials sharing CSAM exclusively with other officials on the company chat server?

I don't believe that's what people think of when they hear "law enforcement is excluded". Officials will still be subject to the law when interacting with anybody else. They will still be subject when interacting on public services. Crucially, everybody will be excluded from private messaging servers, also non law enforcement.

Do we have any reason to believe CSAM is being distributed on the internal EU communication networks?