Looking through the writefreely.org instances on their website, a lot of the links are dead or closed for registration. The one that is open and working is promoting a paid version. Is hosting a writefreely instance heavy on resources, attracting the wrong people or just not “cool” enough?
I did register writefreely.world planning to host that one day, but I need some more selfhosting nerds to help out running all these instances :-) The foundation is now already running a few dozen Fedi instances :-D