Blah blah blah, the same old argument given by the "think of the children" people.
There are many ways to counter that old chestnut, but really, we only need to remember the most basic fundamental facts:
1) Encryption is mathematics 2) Criminals are criminals
Can you ban mathematics ? No. Can you stop criminals being criminals ? No.
So, let's imagine you are able to successfully backdoor E2EE globally, on all devices and all platforms.
Sure, the "think of the children" people will rejoice and start singing "Hallelujah". And the governments will rub their hands with glee with all the new data they have access to.
But the criminals ? Do you honestly think they'll think "oh no, game over" ?
No of course not. They'll pay some cryptographer in need of some money to develop a new E2EE tool and carry on. Business as usual.