Not posting from my sopuli account but I've always appreciated that mander has been a flagship example of what a curated niche instance can be long before any reddit exodus took place.
There are plenty of other spaces for such content, happy to to see you take the time to curate and te effort to keep the instance running.
I think the dev got really enthused when the twitter exodus came to fedi, but then it left and wasn't the next big thing. Plus maintaining or building an app turned out ultimately what they wanted to do. First it had a public ui, then got scaled back to a server if I recall.