Another thing about the metric... trust and robustness to editing and deleting. If the post is moved by the actor(owner), trust in the "punch" allocated on the initial thread and robustness to subsequent editing (before or after move) would need to be incorporated in the "punch" metric.
Just arbitrary, calling it "punch". There is probably an official name in some standard (that I haven't found). I think it is equivalent to the flame icon mentioned elsewhere. To first order, ActivityPub (AP) spec seems to put it in the "microsyntax" vocabulary with "may" connection with other AP implementations (?languages?... Mastodon, et al.). It doesn't seem to be an ActivityType such as Like (in the AP spec). I looked in the Bonfire documentation, but I don't know how to find how the "flame" maps to AP.