I'll try to describe my thoughts again in more detail
1. The only thing you have proven mathematically is that the bases of both platforms should be covered by the physical horizon. The video clearly shows that this is not the case. You can even see water behind the platforms.
2. If the physical horizon can be seen at 2.74 miles (which is not the case because the horizon is behind the platforms), the horizon should also have a curve. It is supposed to be a sphere and not a big rolling pin. However, the horizon is always „horizontal“ no matter how high you go (fisheye lenses excluded of course).
3. To see the horizon, you always have to look down a little or a little bit more. The higher the altitude, the further down you have to look. But the horizon is always at eye level, no matter how high the altitude is.
This is not a fight to defeat someone. We are not enemies just because we debate.