These people. You can get a MiG-29 to take you to the edge of space, so you can see the curve of the earth with your own eyes, for around €20,000.
Or just go to the top of a large building
https://en.wikipedia.org/wiki/List_of_tallest_buildings
1WTC is a little short, but the only one in the US which is close to that height.
It’s just all so stupid that I hate that NPR is even validating this by publishing it. There is no bar anymore, or any level of critical thinking. Ugh.
Of course, it would be easy to test that theory: keep magnifying as the ship sails away, and if the ship is still appears to sink, then the vanishing point explanation is a non sequitur.