In a way, this is like saying that one trusts total strangers in some random large tech company and total strangers in government agencies to read and/or manipulate conversations that kids have. This also paves the way to disallow E2EE for other classes of people based on arbitrary criteria. I don’t believe this is good for society overall.
The reason we are having this discussion, is because the private route worked up to a point.
Firms have a fiduciary duty to shareholders and profit.
On the other hand, You ultimately decide the rules and goals that operate government organizations, and do not have a profit maximization target.
They aren’t the same tool, and they work for different situations.
The E2EE slippery slope is a different challenge, and for that I have no thoughts