Let's say this coin is taped to your ceiling. From where you're standing you can look up and see it, but you're some way past the top of Lincoln's head. Then you walk forwards, pass it, and now you're standing under where Lincoln's body would be.
What is it that you expect to see, what is the contradiction in your mind?
1. Past the top of Lincoln's head, looking up at the penny on the ceiling:
2. Walking forward, looking up at the penny on the ceiling:
3. Walking forward more, past the spot below the penny on the ceiling, bending backwards to see it on the ceiling:
4. Turning around to look up at the penny without having to bend over backwards:
5. Walking forward, back to the spot below the penny on the ceiling:
6. Walking forward back to your original spot, but bending backwards to see the penny on the ceiling:
7. Turning around to view the penny from your original spot without having to bend over backwards:
That's what I'd expect to see.
Now, how would you explain if from 1-3 and 7, the penny always looked like this:
And from 4-6, it always looked like this:
There are two prevalent Flat Earth answers:
One is that Perspective somehow accounts for the unchanging appearance. That's what the OP is addressing.
Another is that given the distances involved, something called Electromagnetic Accelerator is bending light upwards, altering what you'd think you'd see on a flat surface.
There's a third, less prevalent answer and that is the appearance DOES change as one would expect and neither of the first two explanations are necessary. That might be what your position would be, in which case you don't need to argue with the opening post since it's not addressing that.