And what happens when they do is people give them crap over it.
There is a program for converting fish eye images to flat, and every time its done, the earth looks flat in the resulting pictures.
Jeranism was doing work with laser over water, and found no curvature, and everyone complains that he didn't do it good enough.
Have you looked into how far light houses can be seen from?
And then put that distance into an earth curve calculator?
Sounds like an excuse to me. I haven't actually seen them try it.
Look up Jerranism's early work. Then you will see one of them trying.
And the crap he got was huge.
Sorry, I have no memory for names. I have super good memory for facts and details. So, with today's search engines, I can't find again, what I found before.
But, there are others.