Rant - it's always frustrating to see people considering 38k monthly active users as "no users"
(piefedimages.s3.eu-central-003.backblazeb2.com)
My best experience with forums was one where we celebrated the day we got 300 users at the same time. It still felt vibrant, active, nice to be there.
Indeed, even with 20 active people you can already have a vibrant community.