The law was not made for Muslims, but rather for non Muslims like yourself to comply with the tradition of this country during the holy month
Israel observe yom kippur till date, during that The whole country goes dead. And it's impolite to eat in public...I'm sure you don't find that hilarious ;)
As for your last sentence , maybe you should read my post properly. I said all sector (including non governmental ) get affected by the goverment offices shorter working hours.