Hi @BWorsley no problem, happy to help!
The removals is only going to temporarily hide those URLs from search, it’s not going to help with the failed redirects issue in the long run.
If search engines have indexed those pages, then you have to tell them where to look instead when you remove the page.
It’s best if your redirects are setup to go to the closest content match vs having them all go to the home page, what I would look at is how you have the redirects configured in HubSpot - start by exporting your URL redirects and scrubbing through to verify the 121 that failed to see if you can determine whether there is a syntax issue with the redirected URL or something else that might cause them to fail.
Ultimately, the failed redirects shouldn’t hurt your performance, but it will be worth getting them sorted to resolve the issues.
When it comes to redirects, the big things you want to look for are:
1 - that you’re using them properly, 301 for permanent, 302 for temporary.
2 - that you’ve cleaned up internal links to go to the correct URL and not rely on redirects for your own content/links to work properly
3 - that you haven’t created a chain of redirects, where page A redirects to page B, but page B redirects to page C. This should be cleaned up so that page A redirects to page C and page B remains redirected to page C.
How long you retain the redirects really depends on how much traffic those pages are driving to your website via backlinks.
If you created a blog article and it only had 1 view, unpublishing it without a redirect is not going to break anything as long as any internal links are updated. You can also update these to have the lowest priority before taking the step to remove them completely.
If you created a blog article with thousands of views and hundreds of backlinks, and then you unpublish it, you’re going to have to keep the redirect as long as possible - in this case, reach out to the high value backlinks and have them link to some other more relevant content you’ve kept, rather than the old content that you’ve removed.
Depending on your content publishing (and unpublishing) schedule, I would recommend auditing your redirects at least annually, if not semi-annually or even quarterly.