Nonworking: I believe it had to be towed back to port on its maiden voyage, plus numerous breakdowns since.In my opinion, the QEC is a more modern design as however much Shangdong is different from the Kuznetsov, it still shares many of the same characteristics. The QEC has IEP which is undoubtedly more advanced than the Type 002 propulsion system. The dual island design is also an advancement as it offers better control for flight operations and better survivability as it has two separate funnels. The QEC carries better aircraft (F-35B vs J-15 is not really a fair comparison). One area where the Shangdong is ahead is radars, Type 346A is bigger and therefore probably a more powerful radar than either S1850M or Type 997.
How are the QEC "nonworking" or "silly"?
Silly: that the UK, in it's current state, needs, can economically support, or can even usefully use the carriers.