I don’t find any exact issue if a user has their ban database public but if they want others to use it, well the maintainer/reviewers or such of the project must be responsible.
Ideally, before a user makes a ban database public for everybody to use it, i recommend for them gaining reputation or such before that.
I have a project/organization similar to this though instead of it being put in the Community Resources category on Developer Forum, i put it in the Bulletin-Board category because i tend to link it in the description of some roblox games i am affiliated with.