There have been changes to comments announced in HubPages latest blog post. One is commenting will automatically default to newest first. To see the blog post goto https://blog.hubpages.com/2017/08/14/comment-capsule-standardization/
I think it makes sense. Your readers will be able to see the newest, most relevant comments first.
I have a few articles that have been on this site for years, they have tons of comments. But during those years I have edited and changed things. Some of the old comments reference things that are no longer part of the article. So if someone really wants to track back through the comments they can, but the newest ones are going to be the most relevant.
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