Many influential people from the Revolutionary Era of the United States tended to use overly complicated sentences in nearly every document. The most concise person back then was probably Thomas Paine, and even he had somewhat complex sentences every once in a while:
"Society in every state is a blessing, but government even in its best state is but a necessary evil; in its worst state, an intolerable one; for when we suffer, or are exposed to the same miseries by a government, which we might expect in a country without government, our calamity is heightened by reflecting that we furnish the means by which we suffer..."
One of the sciences where using less words makes things less true is biology. For example, you may say "we found the remains of a monkey", but a biologist will want to either hear that it's a "cebus imitator" aka a panamanian white-faced capuchin. Yes, "monkey" describes such an animal, but not very accurately. The longer version of the name narrows it down, but the actual scientific name is the most accurate description of the animal's species. From there, there's then 8 more levels of classification that it falls under. This verbosity is very necessary as there are so many species that it is just easier to use a complicated sounding name instead of describing all the unique features of the creature to explain what it is.
Norse skalds had the habit of describing really simple objects by complex multi-component metaphors, filling their poetry with literary riddles that were deliberately hard to decipher. An example would be "Beowulf", or Björn (Bear). Bears like honey, they prey on it. Bees make honey. Wolves are predators. Bears are like wolves to the bees, therefore Bee-wolf.
Medical doctors are accused of using long Greek or Latin words to describe symptoms or illnesses that have simple common names. Some of it is unnecessary, but it also helps to make it absolutely clear exactly what they mean. You wouldn't want a mistake made because something wasn't exact.
Some doctors will also do this for insurance purposes. Many insurance companies require a diagnosis before paying for a visit, resulting in diagnoses like "benign dermal melanin concentrations" (freckles). The Diagnostic Standards Manual (DSM) used in psychology notoriously classifies every possible human behavior or character type as mentally abnormal to some degree or other (as most symptoms of mental illnesses can be described as "doing something normal in an abnormal manner", so handwashing = normal, handwashing every five minutes = abnormal). It's an open secret that it was written this way just to make it easier for mental health practitioners to bill insurance companies.
Everything becomes funny if you describe it with Sesquipedalian Loquaciousness, as Dr. Henry Gibbons has shown us: "A kiss is the anatomical juxtaposition of two orbicular muscles in a state of contraction." Also known as "osculation".
Scientific American got in on the game as well: "the localized knowledge and know-how developed with untutored experience in particular everyday settings and activities”—the so-called school of hard knocks.
Is it the Easter bunny, or is it “A Lagomorph with delusions of being a Monotreme while undergoing annual charitable acts for the benefit of youthful persons on a day near the event of the spring equinox.”
U.S. President Joe Biden is well known for his Loquaciousness, and he has a sense of humor in regards to it. During the 2008 Democratic primary, when asked at a debate whether he could be disciplined enough as president to restrain his tendency to run on at the mouth, replied: "Yes."