As others have alluded to here… the idea of internet activism as a political movement kinda burned itself out with the rise and fall of the Pirate Party; at least for most of western Europe.
Lots of interesting lessons learned can be drawn from that if such a thing were to be ever attempted again, but at least for now the Fediverse remains solidly in the “infrapolitics” space. We have a community about this here: slrpnk.net/c/infrapolitics