I'm confused. Does gravitation exist in flat earth "theory"?
Q: "What about gravity?"
A: Dark Energy accelerates the Earth and all celestial bodies in the universe at 9.8m/s2. This is commonly known as Universal Acceleration, which produces the same effect as gravity. General relativity uses this concept to explain the equivalence between proper acceleration and gravity.
Q: "Why does gravity vary with altitude?"
A: The celestial bodies have a slight gravitational pull.
Q: Follow-up to previous question: "How is it that the Earth does not have a gravitational pull, but stars and the moon do?"
A: This argument is a non-sequitur. You might as well ask, "How is it that snakes do not have legs, but dogs and cats do?" Snakes are not dogs or cats. The Earth is not a star or the moon. It doesn't follow that each must have exactly the properties of the others, and no more.
I understand that you dismiss gravitation as an explanation for falling objects, but then you use it to explain the gravity variation at different altitudes. You say there is no reason to expect earth to have gravitation because everything else does. However if you consider the definition of gravitation, then you would realize this in incorrect.
gravitation: a natural phenomenon by which objects with mass attract one another
Either the earth is not an object with mass, which would require a lot of explaining, or the pull from the celestial bodies is an entirely new force (not gravitation).
Does FET accept gravitation or not?