Because the rest of your post is completely baseless. The chakra is already in Naruto. He's not continuously receiving more, and even if he was it wouldn't disrupt his chakra flow since it would be a constant amount instead of random. Foreign chakra isn't going to dispel anything unless he activates said foreign chakra AFTER he's already in Genjutsu. If he's in that mode and is put into Genjutsu, there's no disruption of his chakra flow and thus no dispelling of the Genjutsu. Bee in v1 had a foreign chakra within him (Hachibi's) but broke out of Sasuke's Genjutsu AFTER Hachibi woke him up via partner method, not instantly due to the foreign chakra like what would've happen going by your logic.
Again, Kyuubi literally said Sasuke could. I'm not sure where you're going with the Obito/Madara point though given they were fighting a clone the entire time. And then when Obito fought Naruto, Naruto had secured the Kyuubi's chakra for
himself so a portion of it was basically his. After that he was in BM, pretty much no way you can suppress chakra since it doesn't pass the Gate to reach Naruto. And BM is also completely different since Naruto and Kurama
combine their chakra. As you said before, if Naruto is in the gate (8th tail) then Sasuke can't suppress the chakra. But as long as the chakra needs to reach Naruto from within the gate Sasuke should be able to suppress it as he did previously.
Kurama already implied other Uchiha's have been in a Jin's mind [
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][
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]. He wasn't surprised at all and immediately claimed he was an Uchiha when he entered the subconscious area, he also immediately attributed it to the cursed Sharingan and its forsaken ancestry. Also, spoon feed info? You're the one making the assumption that said chakra was only enough to make Naruto KN0, when clearly this amount of chakra
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had not even entered Naruto for us to gauge how much chakra Sasuke suppressed in that instance. VIZ restates "Kyubi-I can't believe you are even able to suppress my power..." implying that the Kyuubi's power itself can be suppressed by Sasuke, which isn't far fetched since the MS can control the Kyuubi's power (suppressing it being the step right behind it, but this is MS Sasuke who's transcended from the Sasuke who suppressed the Kyuubi's power). And btw, NLF isn't a real fallacy so don't try to use it.