The theory I've heard is related to 'crawl budget'. Google is only going to devote a finite amount of time to indexing your site. If the number of articles on your site exceeds that time, some portion of your site won't be indexed. So by 'pruning' undesirable pages, you might boost attention on the articles you want indexed. No clue how this ends up working in practice.
Google's suggestion isn't to delete pages, but maybe mark some pages with a no index header.
Google's suggestion isn't to delete pages, but maybe mark some pages with a no index header.
https://developers.google.com/search/docs/crawling-indexing/...