Such attitude is exactly what China craves the outsiders to have - being underestimated, so they can keep closing the gap while the others being complacent of their lead. A bit of show now and then to prove they're moving into the major league, but wanting everyone keep believing the PLAN is nothing more than bottom-feeder even in 30 years time.
Though it's not like China strive for the same standing as the US - to grow this big you need some major global wars to give cause for expansion.
Right now, China is working on getting enough certified carrier-borne pilots, enough officers and crew manpower pool for carrier ops, building up the software while the hardware still catching up in quantity and quality - J-15 still yet to reach serial production phase, and even in current prototype phase it has yet seen with full payload; first locally built carrier has yet to have its first steel plate cut.
All in all, PLAN carrier group is still 2 decades away from fruition. But nonetheless they're working towards that, so don't write China off so soon. Though for China, they'd certainly hope for something else catch the US attention, best something like what Iraq was, all attention was on the Middle East for 10 years and when the US look up again, they saw a whole different China.