Like when Buddha told his disciples, "discard the raft after you
have crossed the river with it." Do the Buddhists then turn around
and say "hahaha, master we use boat one hor?"
Religious myths have a place. Like when Jesus told an old man; "You
must be born again."
You know what the old man asked Jesus? "I am already so old, how to
go back into my mother's womb?"
So you see? You cannot always take the literal meanings.
"Spiritual" and "Physical" are worlds apart and sometimes, when
using "physical" world examples to talk about "spiritual" things,
it can be very confusing.