Let's assume that it doesn't have any nefarious motives, What's the argument against doing regular police work to catch criminals?
Yes, I understand that it's extremely tempting to be able to peak into every persons communications but that has become feasible only the last decade or so. Just do your job the way it has aways been done.
Haven't we seen how endless are the ambitions of politicians even in the most democratic countries? How one can expect that it's going to be their people who will be sneaking into the people's communications? If you are a tory, consider what happens if Corbyn takes over. If you are a democrat, consider what happens if Trump takes over.
Don't even let me start over the commercial and industrial espionage in concert with the people in the govt.
The moment E2EE is compromised, the computer age dies. This is not like tapping a phone line, the human civilisation is living in a virtual reality where communities come together, organize and express themselves at global scale. We don't need 3D avatars in a metaverse BS, we are already there and compromising E2EE instantly turns our world into a dystopia.