The fact that there are still people who think NTR's "point" is to humiliate the MC says everything, really, it seems most people who consume the genre nowadays can't even remember what the word stands for XD (Helps even less how in SAO is an even iffier situation given that none of the Asuna girls doing it with someone else is really NTR and if they try to do it with Kirito behind Asuna's back it actually DOES count as NTR, but for most people it won't because the MC getting some already makes it 'not really NTR' in their eyes, as most people genuinely seem to think NTR = Humilliate MC instead of the "Stealing Another's Lover" of the name)
Mind you, there is still a chance shit may end up like that because it's in Fujino's nature, but really, if he wanted to then he would have never gone to the trouble of rewriting Suguha's entire plot after she already was completely not-NTR-ed and on her way to full corruption under Hebishima's dick, hers and Sinon's entire plot are proofs that Fujino really went all out into wanting to try something new after all the issues at the beginning of Part 2 made him change his approach to the game completely.