I think it's an interesting idea, but as someone who has an account on furry.engineer and follows fediverse politics, something jumped out at me; its use of a blocklist.
The page doesn't mention who they are using as the root of trust, so I assume it's the fediseer account. Now I don't have anything against fediseer (mostly), but adding a single point of trust to this system is, I think, a bit unnecessary.
Instances that want to protect themselves against spam or undesirables can do it themselves with their own blocklists, fediseer or otherwise. I'm not sure why this tool needs to have its own opinion on blocklists.
I also think whether to pull down nsfw communities should be a toggle; some instances may be cool with it.