Page rank is not WoT, and neither of these are Sovereign WoT. What I described in OP has not existed before now.
I would all but guarantee that some version of “trust scoring based on weighted user interactions” is in use by black box walled gardens. But we can not know for sure, and it is certainly not user controlled.
What is suboptimal? Sounds like you don’t understand what we’ve already built in GrapeRank, and the potential it has to redefine WoT, and how this could not have happened before Nostr. Let me explain.

GitHub
GitHub - Pretty-Good-Freedom-Tech/graperank-nodejs
Contribute to Pretty-Good-Freedom-Tech/graperank-nodejs development by creating an account on GitHub.
GrapeRank over Nostr is a model for Sovereign Webs of Trust. It establishes a means for any client or relay or DVM (or any cloud service) to provide relative trust scores based on ANY user interactions (follows, zaps, likes, mutes, ect…). It not only allows for the scoring algo to be configured and shared by end users, but also is itself a modular library, supporting the growth of a free market of algo providers. Sovereignty comes when users maintain control, having the freedom to choose their own algos for their own needs, amongst a wide variety of useful choices.
Only Nostr provides the sovereignty respecting environment for this to even be possible, and GrapeRank makes it possible.
The power to “out perform central gatekeeping” simply comes as a factor of users having the control to share and implement their own up to date and effective algo configurations.
But you are also correct,
@semisol. There are no regulations preventing [Sovereign] WoT from being globally adopted. The special interests and regulatory capture come to play in protecting the established big socials and the “way things are done” when central power maintains control.
Sovereign WoT is a better solution for keeping the internet safe, but it requires the power holders to release control to the end users.
Nostr will help make this happen.
View quoted note →