To play devil’s advocate, the instance itself appears to be created around 15 days ago (~3 or 4 Jan 2025), so most local accounts will be less than that age, and no one would sign up on that instance if they weren’t enthused about cryptocurrency.
Chances are it is a solo/small bot operation, but without context I can’t rule out that perhaps a community from somewhere else could have migrated. Either way if it becomes too obnoxious, the instance can be blocked client side or de-federated.
Federation can make some communities not show their posts properly which would be a reason why there is little outside engagement. See how this comm looks on lemmy.ca: https://lemmy.ca/c/[email protected]
Not that I know many that would be interested to begin with.