I totally agree with you on all points, but as I said, my gut tells me there’s actually more to it this time:
1. For the first time, China has a product for which there is a market.
2. ... and with which—after extensive preparation—it is venturing into the export market. (for the J-10CE the time was not yet right a few years ago, now it likely istoo)
3. Yes, this is a bold move for both China and the UAE.
4. As for the UAE, I am prepared to say that they are taking the plunge for the first time; the time is finally right for this truly radical departure from the status quo—a step that will greatly anger "Uncle Donald" and comes at a high cost.