There's a difference between religious ritual and moral law. It's not, "Eating before sundown during Ramadan is inherently evil"...it's "You should make every reasonable effort to fast during Ramadan, as a symbol of your devotion to God and of your membership in the community."

The community leadership has to figure out how to define "every reasonable effort" and "sundown" in these situations.

I do agree that God should have anticipated future technologies and put the rules for them into the holy books in advance. If this were a one-time mistake then I wouldn't mind so much, but He does this every single time He sets up a new religion.