It’s not from the browser. As stated in the article:

Initially, it was suggested that this removal impacted Google’s synched Chrome bookmarks but further research reveals that’s not the case. Instead, the removals apply to Google’s saved feature.

It’s a feature specific to the google app that lets you share collections of bookmarks:

https://support.google.com/websearch/answer/13128452?hl=en

They don’t want people sharing links to pirate sites.

It’s still bad, but saying they are going through bookmarks in chrome and deleting them is misinformation.