The Wayback Machine crawls indexes of sites for their map to websites unless the site owner places a file on their site to expressly exclude the Wayback Machine from copying it.
Most people either don't know about this, don't do it, or don't care.
-PJ
Is this issue about the sites being created 10/26 legitimate? Can the dates be verified and can the originator be tracked down?
I checked it before posting. It doesn’t do it automatically. Here are the instructions about how to turn it on for WordPress.
https://wpmudev.com/blog/archiving-with-wayback-machine/