You words say "(((we))) can prove repeatedly that the earth is a globe" but there's no truth to them. I can demonstrate that the Earth is stationary with a gyroscope, I can measure angles on a plane with a sextant and, I can show the pull of gravity is a farce with a slinky drop.
You can demonstrate whatever you want. Put a ruler on the ground and demonstrate the earth is flat.
We've know for 2,000 years the earth is a globe. You need to leave your house before you can tell me what color the sky is.