This is because Fujino originally had clearly a very specific plan in mind for how the game was gonna go even before Part 2's split. Reminder, the ONLY reason the game turned out as it is is was because of all the personal stuff that happened to Fujino: China banning all +18 content under jail penalty, him deciding to move countries to keep making his games, understimating how difficult/time-consuming adding Alice and Liz to the game was gonna be, and finally the terrible reception that the first release of Part 2 got on top of that. Fujino had always been the kind to completely ignore anyone who complained or disliked how he did things and do his own thing, but with ALL that happened to him at that time he couldn't afford to at all, so he decided to rework the game's plot based off polls and suggestions, and that's how we even ended with things like the entirety of how Suguha and Sinon's plot twisted upon themselves. Is VERY obvious that Sugu and Shino were originally just meant to end up as sex slaves serving Hebishima together, all of Part 1 and the beginning of Part 2 make this obvious, and Alice clearly was originally being written to end up crushing on Kirito before being 'stolen' by the hypno-shit of the council, but Fujino had to abandon those bits completely or rework them entirely to keep writing the new version of the game (Alice's plot even was recently recycled, she admited to Kirito that she only got with Klein because she accepted she couldn't be with him and it was him who she actually liked, LMAO, poor Klein).
The endings he originally planned and announced probably worked perfectly with how he wanted the game to go and end at that time, they just make little sense now with how different and overcomplicated he made the plot, so he's probably gonna have to make even more plot-holes and everyone being stupid to make it work at all XP
