One SEO professional was concerned about the number of pages on their site. They have 1,000 pages that are old and were wondering if they should remove them just because of this issue.
Their dev team was under the impression that the more pages Google has indexed, the higher its authority.
John Mueller explained that this is not the case at all. If you have more pages indexed, Google’s not going to think your site is better.
To expand on what John said—you can have 1,000 junk pages and 50 quality pages. The 50 quality pages with great content and other value are going to be better every time. The 1,000 junk pages remaining stagnant are likely not to be as valuable.
It depends on the quality, original research that goes into the piece, the information you communicate to the reader, and how useful it is in your overall site’s picture.
This discussion happens at approximately the 3:49 mark in the video.