I have been following this thread with interest. Ages ago I fixed the iMessages problem during Yosemite beta and then it stopped working again at some point after upgrading to the released Yosemite. I decided to wait a little while and see what developed. I prefer not to be banned, and we (wife and I) have a number of Apple products that we prefer to use more than I enjoy my hackintosh.
That said, here are my thoughts - these are idle musing and based on nothing but what I have read here:
There are several possibilities -
1. Apple is aware of hacks and doesn't care, instead it is simply aggressively working on tightening security and our issues are a simple side effect, and we put too much importance on our presence. I seriously doubt Apple is afraid hackers are using Hackintoshes to bypass their security - why bother, when a simple older Mac can be had used for a few hundred dollars...
2. Apple lawyers have instructed management that Apple must take active steps to protect it's copyrighted material. If a company KNOWS that someone is violating it's copyrighted material and does not take steps to correct this, courts have found/rule that the company has lost the right to seek remedies in the future. So, it may well be that Apple has a team of one aggressive person on staff whose job it is to actively/full time harass hackers.
3. I am sure Apple does not want to annoy "real" users. If they want to stop hacks and not annoy real users the approach I would take would be to identify hacks, identify hack techniques (google is their friend) and monitor forums like this one. I would then collect a database on all the details about the hacks that I can get and analyze that data offline looking for the best way to stop hacks while allowing real users to pass through the door. So, the more "attempts" individuals make to circumvent Apples security the more information Apple gets on how people might circumvent their security - consider that when you "try" something known to not work, you are in essence "working for Apple" and supplying them with more information...
I don't know if any of this is the case, but I think it humorous that most people here seem to think of Apple as this "sleeping giant" that they can just carefully tip toe past. I expect Apple is well aware of the Hacks and the real issue is do they care, and I don't expect them to let us know one way or the other any time soon. For my part, I prefer to let the ones here that have the time and experience to try to figure out what is actually happening to work on it, and to not risk my own Apple IDs or devices being banned.
And one last word and I will go back to lurking... those of you who are just "trying things" that might work - you are being incredibly selfish and while it might not matter to you if you sink the good ship hackintosh, I think I speak for most of us when I say I wish you would just stop and let Jay and others find a real solution before you end it for all of us. You know that if Apple wanted to they could push weekly changes, based on the info they are gathering, that would not only stop iMessages, but prevent Mackintoshes from running at all on foreign hardware...