>>52296897I'd argue that Hololive kept their entertainment streak going while Nijisanji stagnated.
It also helps that the Holobox is a lot better at creating interesting permutations of chuubas despite having far fewer debuts.
Every new Holo gen has had a potential new group and an expansion of the "box" in general.
Gen 3 sowed the seeds for the eventual Holobox with inter-gen unity and introduced the concept of funneling their streams one after the other.
Gen 4 - Coco specifically - fleshed out the concept of the "Box" by collating all the "news" and shitposts about various holos under a single banner.
The Taiwan yab and the forced isolation of Hololive brought group unity to an unprecedented and unbreakable level.
Gen 5 brought together SubaChocoLunaTan, Shiraken, the Lamy drinking gang, and many other varied groups.
Gen 6 brought together LuiChoco and the hag groups, Laplus somehow has chemistry with pretty much any holo she collabs with, Koyo brought them another power streamer and a spiritual Asacoco successor, Chloe brought them a Rushia replacement and several new groups, and Iroha brought them an ultra rare seiso talent.
What famous group within Nijisanji involves any of the gens that came after Edengumi?