I have trouble seeing how anyone could get that interpretation, even looking at the passage in isolation,

Isaiah 40:22:  It is he that sitteth upon the globe of the earth

Scripture may be parabolic about the description of earth, but not exactly silent.
It tells us there is a dome over the earth
That the dome is like a vault
That there is water above the dome/vault/firmament
That the dome has windows
That the dome is a physical thing, like crystal or beaten metal
That earth has edges
That earth has corners
That it has ends
That the dome above earth is bound to the edges of earth
That the earth has a foundation and can never move, forever
That earth has pillars that make up the foundation
That earth has cardinal directions and that God's mercy separates us from sin as far as east is from west
That heaven is above earth
That hell is below earth
That earth is like God's footstool.



Funny how all these descriptions describe the earth in such a way that both independently as well as together, the reasonable picture of a flat earth is drawn but, without extreme mental scrambling and a good dose of mental gymnastics, zero of them work to describe a globe.

That the earth has a foundation and can never move, forever
That earth has pillars that make up the foundation
...
That earth is like God's footstool.

Scripture may be parabolic about the description of earth, but not exactly silent.
It tells us there is a dome over the earth
That the dome is like a vault
That there is water above the dome/vault/firmament
That the dome has windows
That the dome is a physical thing, like crystal or beaten metal
That earth has edges
That earth has corners
That it has ends
That the dome above earth is bound to the edges of earth
That the earth has a foundation and can never move, forever
That earth has pillars that make up the foundation
That earth has cardinal directions and that God's mercy separates us from sin as far as east is from west
That heaven is above earth
That hell is below earth
That earth is like God's footstool.



Funny how all these descriptions describe the earth in such a way that both independently as well as together, the reasonable picture of a flat earth is drawn but, without extreme mental scrambling and a good dose of mental gymnastics, zero of them work to describe a globe.

He wrote that it is incorrect and of no spiritual benefit to use such statements as the basis of a cosmology.  And this is not simply an opinion of a Father of the Church; it was incorporated into magisterial teaching by Leo XIII.  We cannot simply ignore it.

You are doing exactly the opposite of what St. Augustine taught.  He wrote that it is incorrect and of no spiritual benefit to use such statements as the basis of a cosmology.  And this is not simply an opinion of a Father of the Church; it was incorporated into magisterial teaching by Leo XIII.  We cannot simply ignore it.

This approach to Scripture is essentially Protestant and should not be practiced by Catholics.