I’ve noticed that words that are considered “profanity” tend to be vernacular words that express negative emotions (pain, anger, frustration, etc). The fact that these words are considered profane seems a bit unhealthy, because it limits our ability to verbally express how we are feeling internally. Nevertheless, I think some people might use these words too often. If one is cursing every other word all the time, then it’s a bit like “crying wolf” once they use it when they’re actually experiencing a strong negative emotion.
The smartphone is a different beast. Hardware and software companies spent millions of dollars of R&D to create the most psychologically addicting and attention demanding device as possible.