Google's Search Advocates: Is There Too Much Metadata?

Mueller adds that too much metadata is a bigger issue than too many noindexed pages. The Google Search Relations team respond to queries from people uncertain if they have an excessive amount of pages disregarded by search engines. John Mueller and Gary Illyes, Google's Search Advocates, take turns discerning the three questions. According to Illyes, noindex is an expedient to aid sites in preventing content from being spotted by search engines. Unless the website contains an exorbitant amount of pages, there's no need for panic with regard to the crawl budget. Meanwhile, Mueller adds that overly abundant metadata is a much more pressing predicament than having an abundance of pages disregarded by search engines. Search engines such as Google offer a helpful feature supported by the use of noindex, so website owners can opt to keep their content away from their indexes. This can be especially useful when there are multiple pages which may, in turn, not have a negative effect on how Google scans and arranges the site. For a website that is on a smaller scale and contains less than a million pages, presumably it would not be necessary to stress over the use of crawl budget. Noindex is a useful tool to keep items out of the index, according to Illyes. If a page has intentionally been noindexed, then one need not be concerned about Search Console raising any alarms. If you want to make sure your page or its link does not get indexed in Google, then noindex is the best way to do so.

(source: https://www.searchenginejournal.com/google-noindexed-pages-do-not-impact-crawl-budget/472870/)