Mac, organised religion is also a part of the conspiracy. The Pope and the Vatican are supposedly satanic free masons. I don't know the explana6for the Saudis and Arabs, but I'm sure there is one.
Flat Earthers alone know and hold the obvious truth and they don't have the resources to buy ballistic missiles or any sort of rocket for that matter to conduct a test as you have suggested. I don't know if the can launch a go pro off New Zealand either but I won't hold my breath.
Point is flat earthism is a belief. It also requires a conspiracy to ignore the mountains of evidence stacked against it. Conducting experiments that would or should result in clear results will not be done. Heck something as simple as conducting Erathos experiment but with 3 points has never been done by the flat earth community as it would clearly show the sun isn't anywhere near 3000 miles
If they are part of conspiracy too, then who isn't?
If 98.4% of the world is part of the conspiracy, why is the remaining 1.6% still alive?
I measured Sun height from two points and got 4 different results.
One result from triangle Bremen-Stuttgart-Sun,
second result from same triangle using formula from Wiki,
third result from triangle Stutgart-Equator-Sun,
fourth result from triangle Bremen-Equator-Sun.
I was banned for that, because "I was 'deliberately' misrepresenting Flat Earth model".
As if you can represent Flat model "correctly" using data from real life.
Junker will ban everyone who can clearly show flaws of Flat model.
If Sun is not 93 million miles from Earth, then WHAT IS there?
But some people don't care for facts.
They will collect only things that confirm their claims and the rest will either twist, or utterly deny.
I'm not here to "win" some "battle".
Science is cooperation, not competition.
These people don't care for clarifications, nor for knowledge over belief.
I'm not sure I will log in here again.
They know everything better than "us mortals".