I think warrantless access, deanonymising the internet, etc, are things that go together. If you want auto-governance (technocracy), to micro-manage every citizen, these are the foundations you need. As it is already determined that this is what will be happening, no amount of discussion will make a material change - the legislation is going in whether people want it or not. The individual justifications for each legal step in the construction are either going to be done with low visibility, or a trope like ('for the children/terrorists') will be wheeled out. Works every time, so why change?

There is no warrantless access to data here though. None. It's merely showing the warrant to the person being 'searched'. As mentioned elsewhere, the same has been true for decades with someone's phone being tapped.

The ISP can see the warrant. The judge creates a warrant. The court sees the warrant.