This is low-key so useless. From the headline I expected some deeper kind of integration, indexing, ability to find old dead pages with useful info more easily.

Nope.

They just throw a generic link in a place hidden so deep that nobody will ever see it. You first need to click the three dots, then find the "More about this page" in the middle, and there it is. I don't know why they bothered announcing it at all, it's so hidden and useless they might as well have not bothered at all. Just copy-paste the website link into the IA search and the end result will be the same but faster.