I've created a dozen devlog entries inside my itchio project but only just realised there is a community forum also called devlogs. They seem too be different but have the same name. Also potentially different audiences.

I'd like to make my project devlog available to those reading the community forum. Should I copy and paste my project devlog to the community forumsince the rules state dumping links is not allowed?

I'm beginning too think I've been making devlog inside the project which had very little exposure. If so then that makes me sad. :(

Sorry to hear that. Normally devlogs are read by many people, and indexed by search engines, so they can be found from outside itch.io as well. Sure, you can try cross-posting them the the forum, I don't think we have a rule against that.