You didn't actually read the whole essay, did you? It discusses at length the original Judeo-Christian flat earth belief. People aware of the history of science know, for example, that Galileo was found guilty of heresy for describing a heliocentric solar system.
According to Isaiah 40:22, New International Version, not only is the earth a circle (which is a flat object), the heavens are solid, like cloth:
He sits enthroned above the circle of the earth, and its people are like grasshoppers.
He stretches out the heavens like a canopy, and spreads them out like a tent to live in.
And according to Job 38:13, New International Version, the earth has edges:
that it might take the earth by the edges and shake the wicked out of it?
The Bible simply does not describe the universe as we know it to be. Denying that the Bible describes a flat earth, etc., in order to try to make its description of a sudden creation event 6,000 years ago seem more believable is rather dishonest, in my opinion.
BTW, it's very presumptious to assume that scientists don't read the Bible.
Galileo was prosecuted by the Inquisition because his Copernican description of the universe conflicted with the Aristotelean model which the Catholic church had adapted as a result of the influence of Aquinas whose entire metaphysic was based on Aristotle. Further, your quotes for Isaiah are nothing more than similes and metaphors which are used in all literature including the Bible. Here’s a hint: note the use of the word “like” and then look up the definition of simile. Do you really think the Bible considers people to be literal grasshoppers and the sky to be a cloth tent? Whats remarkable is that in 675 BC Isaiah knew the earth was round (and circular shape does not equate to a “flat object”). The Isaiah passages are the prophet pointing out the transcendence and omnipotence of God. The Job passage is pointing out the Justice and reckoning of God. Jesus compared the Kingdom of Heaven to a mustard seed, a pearl, and many other inanimate objects. While the Bible is not a science book, when the original text does touch on matters of science it is always correct. When it touches on matters of history it is always correct.