If google does something illegal they will try and hide any evidence of any illegality they perpetuated.

Google has a problem, if they post illegal content to the top of web listings, web crawlers would pickup the website content that indicates the illegality of the website.

Its a really big problem if a website archive picks up the illegal content.

So what does Google do to cover up the illegal content?

Google instructs webarchives to erase large sections of crawled data that would indicate the guilt of google.

You could see it in these examples:

This is a good example, there is a large section of tumble media data missing in 2017 when illegal internet content was posted by google:

This is google erasing the extremely illegal webcontent posted by google explained in the google criminality page:

This example shows google erasing several years of internet data, referencing this sight:

So by erasing website archival data google is effectively admitting to the guilt of their intentionally posted illegal web content. Its rather clear that they simply tried to erased any evidence of it.

After google posts illegal content they will try and cover up evidence to try and avoid a legal consequence.

Video Explanation of Google Cleaning Internet Malice