Well, it's definitely not a coincidence, that's for sure. Incstor is only active again because, like you showed, his support was falling. He wants to keep the money rolling in so he started working on the game again. Onyxdime works for Incstor, supposedly on commission (i.e. he writes the scenes and dialogue for X amount of renders for Y amount of money). So does working for Incstor on commission make you a part of the scam? I'd say no, because at the end of the day if Onyxdime refused to take commission work from a scammer, then the scammer would just go to someone else. So you can fault him for that if you want, but in my opinion it's not a big deal, whatever, go make your money.
However, I don't think it's that simple. Because like you showed, as soon as the patreon hit it's low point in October 2022 all of a sudden Onyxdime is back here posting in the thread. And that doesn't necessarily mean anything, because why not pop in and let people know the games back on? But that's not all Onyxdime did/is doing. He's doing much more than that. He's been very active in this thread giving people updates, answering peoples questions, and basically just acting as an ambassador of Incstor/Milfy City to the community. He's playing a very active role in getting people interested in the game again.
So if Onyxdime's financial stake in this game starts and ends with the flat commission fee Incstor is paying him, then why is Onyxdime so persistent and seem so concerend with getting people interested in this game again and salvaging the games reputation? What does he care about that, what is he getting out of it? You don't see the coder or other artist doing that... And you don't see them doing that because that's not there job, it's Incstor's, since Incstor is the one who is making money from the patreon and is the one who benefits from seeing the patreon grow, not the comission workers. So if you're just a comission worker, why are you doing PR for Incstor?
So it's for those reasons I think Onyxdime isn't being entirely truthful, or is misleading people, about his financial stake in this game. I imagine that the more money Incstor makes on patreon, the more money Onyxdime makes as well, which is why he's so interested in playing these PR games.
So I definitely think it's fair to say Onyxdime is in on the scam. Only the most delusional of paypigs think that Incstor is anything but a liar, scammer, milker, or whatever other name you want to call him. Only the most delusional of payings think that what's going on now is anything more than just Incstor doing some work to get his finances back up so that he can go back to spending the next 2+ years collecting fat checks for nothing. And Onyxdime isn't stupid, he seens like a smart guy. So he should know who Incstor really is, in fact, given how his working relationship with Incstor he should know better than anyone who Incstor really is and what he's really doing. He's not some unknowing participant ignorant of what's really going on and what's been going on for years.
He knows that Incstor isn't turning over a new leaf and isn't going to start being honest and fulfill his promises. He knows that Incstor will eventually disappear again after a couple of updates (if he even puts out any) after his patreon support has recovered. And despite knowing this he is actively helping it grow by trying to get people interested again. So yes Onyxdime is definitely in on the scam because he's so active in helping this scammer. And he's probably so active because the more money the scam makes, the more money he makes. Like I said before, you don't see the coder or other artist doing what Onyxdime is doing, because true commission workers have no incentive too.
And once the game is dead again, Onyxdime will disappear. And then years later when Incstor comes back and decides it's time to give the pigs another feeding, Onyxdime will come back right along with him and go out there on the front lines to try and get more pigs into the slaughterhouse so he can get more bacon.