If I say God created the sun, does it become omphalism because it takes a billion years for a hydrogen cloud to collapse and become a sun ?
Well, there are some things that God would have been obliged to do if he wanted a universe that worked from day one. Obviously creating the sun would have been one of those things, because life on earth would be impossible without it. Similarly he'd have needed to make the sea salt, or he'd have nowhere to keep all the salt-water fish; and he'd have needed to make soil without waiting for sub-aerial weathering to take place, or the plants would have had nowhere to grow.
So much we can grant. But you slip into omphalism when you start supposing that he could have
gratuitously made the universe look old for no apparent reason except to screw with scientists.
Raffiniert ist der Herr Gott, aber boshaft ist er nicht.