Apple doesn't care and has never cared. Their pockets are lined with our cash, they're a business they couldn't give a flying f about their product, as long as it makes them money they're fine.
oh yes they do care.
stock has plunged, they need attention.
and be sure they're monitoring review sites to some extent to check the temperature.
iOS7 is a major change to the OS, they can't afford to do it exclusively "their way" and bet their next years on a badly reviewed/received OS.