The point is adding a centralized control structure in front of E2E encrypted traffic fundamentally undermines the principals that make E2E work. It creates a massive centralized point of failure, creating an obvious and fundamentally brittle target for hackers to exploit in what's otherwise our only effective privacy and security measures.

There will always be tradeoffs between security/privacy and enforcement. There are ways to target harmful content without undermining E2E. There is no way to replace the privacy and security guarantees of E2E.