They mean wall time and not work time. That's pretty aggressive
I guess it's preference, but I'd rather ship quickly and cover most of my users, and respond to any bugs that do surface (and there's every chance they won't) for obscure issues that probably won't really impact revenue.
I wonder why the rest of the industry continues to produce so many bugs, didn’t they figure this out?
They may also be in a position where they can afford to delay releasing a feature until all bugs are fixed. Most teams on the other hand ship with known bugs, because a feature with bugs today will make more money than a feature without bugs tomorrow.