If Facebook and Goggle can work out who I like, where I have been...
Then you're not protecting your own privacy properly in an age the where failure to do so carries more risks than ever before. These trillion dollar companies with GDP bigger than the UK can't "introduce systems that can't be defeated by VPN's, Token Sharing and anything else that can be used now" because to do so would make the uncensored non-WWW options I mentioned previously appear much more convenient, turning them into the defacto standard choices for everyone (whether adult or child).
Case in point: LimeWire still works right now despite authorities across the globe "shutting it down" many years ago. It's incredibly convenient. Wikipedia explains all, only a handful of versions fail to work.
You can always NOT try it yourself to see how NOT easy it is: Download it, run it, wait a minute or so for it to connect, then search for 'xxx'. When you see a result you like, feel free to NOT select it and NOT click download. Your PC will then NOT connect to every other PC which hosts a copy (seeders) and totally NOT download chunks of the file from each of them. I think you get the idea.
Folks only use porn websites because waiting 30-40 seconds on a download is very slightly less convenient than instant streaming. Add barriers to accessing the content and that changes things. It's also worth noting that the content on mainstream porn websites is now all verified (with performers having to supply proof of ID before uploading) while P2P content is an unvetted free for all.
In conclusion: "lol no kid will be 'saved' from the porno" is an informed opinion, it's just an opinion you don't like. In fact, not only will no kid be "saved" they'll end up more exposed to it than ever before if this proposal becomes statute.