That specific example skews into flaming/flamebaiting. The thing about swearing is you
really need to take care to make sure that the statements with the swearing aren't targeting other users, and aren't being used simply to inflame the discussion. Telling someone their argument is stupid, for instance, is fairly mild; telling someone that their argument is "fucking stupid" escalates the statement simply because the cursing makes it way more incendiary. Calling someone's favored candidate "an idiot" is pretty mild; calling that candidate "a fucking shit-eating twat-waddle" is ... not. Another example might be the internet's favorite exclamation of "What the fuck?!"; that's pretty safe, because the common connotation for that is pure disbelief not directed at anyone in particular.
I'm going to hazard this post of mine is what prompted the query; you'll note that the intensifiers are all applied to objects- the fucking forum, flaming bullshit, and so on; the closest any of the cursing gets to actually being aimed
at Huswyae is the "you just had to fucking cross the goddamn fucking line and fucking flame the guy" line, which is attacking his
actions, not him the player. (That is pretty much the textbook definition of "tapdancing RIGHT on the edge" though, since the intended overall effect was to be almost satirically absurd with the sheer volume of swearing but it could potentially be misread in a different set of circumstances. I would not advise skirting that close to the line!)
Like pretty much any other word, it's not necessarily what or how much of it you use, it's how you use it. My post was an intentionally over-the-top and highly exaggerated demonstration; in everyday use, someone who
isn't trying to be as incendiary as possible probably won't be dropping language like that constantly. When in doubt, just don't curse; there are a wide variety of less-incendiary intensifiers you can use in your writing to get the point across that aren't as loaded as a lot of cursing tends to be.