I don't think that it is the case here - unless one believes that Khonsu was the sole mastermind behind that. As far as it is depicted here the Vasudans gained more and more influence over the Terrans at the timeframe of several decades, and with increasing power new opportunities arrive that they can exploit and so forth.
Well, the point of the OP thesis is that this was all planned by Khonsu from the get go. I think Orpheus is exactly right about the problems here, but a slight tone correction to the story is enough. Just like you imply, make Khonsu perform certain decisions that he knows will improve the odds of undermining Terran's performance in their economy all the while pretending he is doing it altruistically or in the spirit of allyship. He doesn't know the outcome of his decisions, he's more like a chess player who places his pieces not because he's already calculating a check mate, but rather because he knows that having those pieces there he is creating possibilities and openings that may eventually lead to a mating net, if your opponent distracts himself just a bit (positional play).
There's another move that Khonsu could have made subtletly here and there for that effect: feed upon terran's paranoia about Vasudans, in order to amp up NTF's numbers. Let them fight each other, even if at the cost of some vasudan lives. While it is true that vasudans engaged the NTF head on, let's not forget that the brunt of resources, lives and ships lost was human (both from the GTA and NTF). By my count, several cruisers, at least two Orion destroyers and a couple of deimos-class corvettes, and IDK how many fighters and bombers.
This would be a 100% safe move. There just was no way that a NTF insurrection could ever be successful, for there was always the Collossus trump card to clean house at the end.
BTW what would the Vasudan position to opening the Sol node be? That seems kinda inevitable, but it would doom all there fine planings.
At first glance, maybe so. But consider Inferno or BP: It's quite clear that it could well end up in another civil war scenario. It would, at least, throw the human colonies into a chaotic mess, with refugees trying to flee to Sol, a lot of economic turmoil and political shenanigans. Many in Sol, OTOH, having learned about Capella, would probably freak the **** out about being opened up again to interstellar nodes. A lot of uncertainty there, but chaos would be guaranteed. The only thing Khonsu would have to make sure would be that Sol wouldn't be a direct threat to Vasudans, and then continue to play the long game.