Who's doing the quality control? Not any Australian organisation that's for sure.
So yes the only quality control being done is in the factory somewhere in China/Phillipines/Taiwan where these cheap wheels are made and you can bet that safety, integrity nor quality are the number one priority on the manufacturers minds.
Okay so your rims are smashed against the gutter in an accident.
With cheap, poorly made wheels, the whole wheel could buckle and collapse and possibly dealing even more damage to your suspension, your brakes and your chassis.
With good quality rims, the wheel could withstand the hit and remain intact.
Maybe these pictures will change your mind: