On the topic of the UX of scores of 0-100 and confidence of 0-100:

The simplest UX would be a single button, like the follow button. Underneath the hood, you are leaving an attestation with a score of 100 and a confidence of 100 percent. Users will not need to know or think about what’s happening under the hood.

The next step up would be two buttons, like the follow and mute button. Underneath the hood, you are leaving an attestation with a score of 100 (follow) or 0 (mute).

The next step up would be either more buttons (e.g. scores of 0, 50, or 100) or a slider for the score, which you’d implement if users want more optionality.

Same thing for confidence: add more optionality if and when the users want it. Otherwise, don’t force them to have to make too many decisions.