I found a Java server that is inspired by Hermitcraft and it is for 18+ players only. It is whitelist only and you have to do a short application and a quick voice chat interview to get in.

The world is meant to last a long time and they do not do frequent resets. The gameplay is mostly vanilla feeling with some quality of life plugins and some custom items like placeable player heads and mini blocks.

The economy is based on diamonds and player run shops. They also use a permit system so shops do not get oversaturated and so builds and trading stay meaningful.

Events seem like a huge deal here and they happen regularly. There are exploration events and server wide competitions and themed event series. Sometimes they even do experimental or modded style events like Life Series type runs One Block and modded hardcore challenges.

The community sounds like builders grinders and casual redstone players. Pvp is limited and mostly happens during events. It is not a fast progression server and most people are in it for long term building and hanging out.