The discussion over the choices in the chapter beginning and Kirito masoquist/cuck FJ are nothing more then a prelude for things yet to come, the implemention was good, no, but was wrong also no.
Fujino need to justify the endings he choose and for that he need to change the narrative status quo, since the beginning he left clear that Kirito would lose and Asuna would end up as Inoda cum dump, and this end didn't change just the way how we would get there was mixed with several plot lines, Suguha, Sinon, Council/Admin now Fujino just bring back the Cukirito to front and center alongside Asuna/Inoda affair.
One example how he can justify Kirito masoquist/cuck is the influence from Sinon, Liz and Sugu.
Sinon is a dominatrix, Liz a Sadist and Sugu a stalker so when we choose to see the scenes between them, Kirito is always in a submissive/helpless situation, he's has being humiliated and raped several times, so with that in mind is not so weird he asking Asuna to humiliate him he's has being trained to be like that for a while now.
That means the endings can't be different? No, but they are on pair with the narrative so far he will end up as submissive masoquist/cuck to Asuna without knowing anything, or as a submissive masoquist/cuck fucktoy for Sinon and or Suguha because that's how Fujino build the narrative, the only certainty here is NTR is not avoidable, so pick your poison.
But who knows maybe Fujino surprise us all, with some alternative ending.