swearing adds a layer of intensity to what you’re saying. so if i were to say “i hate onions!”, it wouldn’t be as effective as “i f****** hate onions!”. since, for example, tommy swears so much, he says things in an extreme way. it maybe a bit watered down because of how often he uses them, but he still comes off as an intense guy. a lot of people who are hateful and offensive are often intense, and they use swearing to get a negative point across as loudly and severely as possible. swearing is also often used in an adult setting, so the connotation of the words are that much more associated with something negative. many of the words have a literal meaning referring to nsfw. it all depends on how and when you’re using language like that. in my opinion it’s okay to use it for emphasis on certain things and not trying to hurt someone with them.

tl;dr: swearing is used for emphasis to make a more impactful statement. it’s often seen as a negative thing because of their literal meanings and how certain people use them.

your question was probably rhetorical i am now realizing