I do not blame him for his reaction. There were some other long-time forum users of this website who also have similar reactions in not only this thread but others as well. This isn't me calling them out or even talking down on them. Someone else said it best: we've gotten too used to constant major changes and good news every few days or even every day now. China is now extremely rich in both money and talent pool.
Seeing all these constant improvements is, in some ways, to be expected, but sometimes people here fall to the American mindset that China is somehow too powerful yet too weak. As good as we are, we are still human and, more importantly, still developing. China learns from its mistakes; it just needs more experience and time, and that is what we have right now. They might do something we here don't agree with, but it's still a learning stage for the PLA.