Yep, some folks just have such a limited vocabulary. Guess it is the only way they think that they can express themselves or make a point.
While I possess a lexicon of sufficient breadth and precision to articulate nuance, subtlety, and layered thought without reliance on crude expletives; I do, on occasion, elect to punctuate my discourse with judiciously deployed profanity—not as a substitute for linguistic capability, but as a deliberate stylistic flourish, lending emphasis, cadence, and a touch of irreverent humanity to an otherwise meticulously curated expression.