Anthony Scaramucci, who hosts a financial affairs program, is not a scientist, but he plays one (badly) on TV. One of his current themes as part of the Trump transition team is to assert that "science" once held to belief in a flat earth and therefore cannot be trusted to evaluate global climate change. The fact is that no well educated person in the western world has believed in a flat earth for over TWO THOUSAND YEARS.
The spherical shape of the Earth has been clear since before Eratosthenes first estimated its circumference in about 200 B.C. Depending on which estimate of the length of the "stadia" with which he measured distance, he erred on the circumference by only a few miles. At the time, such inquiries were part of a broad range of intellectual inquiry the Greeks called "philosophy" (Eratosthenes was a Greek Egyptian during the Ptolemaic dynasty following Alexander the Great).
The modern concept of "science" is not merely the aggregation of anecdotal observations. It involves the formation of hypotheses and repetitive observation and testing followed by more repetition until it becomes clear that a hypothesis is proven. Often later observations using new techniques may call the old hypothesis into question, so the whole process resumes and continues until the old or the new proves to be the better explanation of reality. Better tools yield better explanations; this does not mean the older investigators were fools or knaves.
Despite the fourth-grade story we all heard, Columbus and contemporary scholars were well acquainted with the spherical Earth; he did, however, apparently believe the Earth to be much smaller than it really is, leading to his assertion that he could sail directly to Asia. (There are many claims about what Columbus really knew, of course.) Whether ordinary people understood the truth is another question, but the matter was correctly understood by navigators and scholars.
It is likely that Eratosthenes will continue to be long remembered and admired. It is also likely that Scaramucci will be quickly forgotten once his TV caché and the never-happened belief of "science" in a flat-earth hypothesis has faded from our cultural memory.