How many of those in the article are posters here on FR? We certainly have more than our fair share of nutter flat earthers here.
I do not support the Flat Earth “theory”—but I would never ever call the supporters names.
There is a very practical reason for that—it is impossible to persuade anyone of anything if they don’t like you.
There are actually two kinds of “theories” about anything.
—Falsifiable and non-falsifiable
—Falsifiable theories means that the advocates of that view could change their mind if certain new information was verified to their satisfaction.
—Non-falsifiable theories means than no new facts or discovery could ever disprove the theory.
Imho the first type of theory—no matter how unpleasant or how difficult to believe—is not “nuts”.
The second type of theory is nuts.
I am one. Call me a nutter to my face.