Search Console keeps flagging a chunk of pages as "Crawled, currently not indexed", and people split hard on what to do about it. One camp rewrites the content and requests indexing every time. For most sites I'm in the other camp. If Google crawled the page and still chose not to index it, the page usually isn't adding anything the index needs. Thin tag archives, filter URLs and near-duplicate product variants are the typical cases, and forcing them in tends to spread crawl attention thinner across the pages that matter.
The exception is when the flagged URLs are your money pages. Then it's a quality problem, and the real test is whether the page answers the query better than what's already ranking. Where do others draw that line, especially on sites with a few thousand URLs?