Opening up private company communications to the government makes that data a huge target for foreign intelligence and criminal organisations. Even our allies will happily pass on valuable company secrets to their own companies. Everyone is out for themselves. The software our government uses to analyse data will generally be closed source and supplied by a foreign power and not sufficiently audited.

Unfortunately our politicians are dangerously ignorant about the techological risks to national sovereignty and our economy. So they rely on often dubious advice from parties with a vested interest that is opposed to the public interest.

It's pretty convenient for sharing new account/access passwords which is something I need to do occasionally. In the back of my mind I keep hearing a voice saying 'you could do this more securely if you thought about it for a moment' but I just ignore the zealot in my skull.