" The great enemy of clear language is insincerity. When there is a gap between one’s real and one’s declared aims, one turns as it were instinctively to long words and exhausted idioms, like a cuttlefish spurting out ink". [George Orwell]
We certainly see this in politics. “Weasel words,” as Theodore Roosevelt called them, are designed to make the objectionable acceptable. “Pro-choice” hides the truth of abortion beneath the veneer of freedom. “Undocumented worker” glosses over illegalities with benign terminology about employment. “Social justice” glams up redistribution of wealth. “Voluntary” in tax law is a slippery term that doesn’t really mean what you think it means.