I've only tried it with hungerian text so far, but man... They talk really f*cking dirty most of the time!
I don't mind it, since most of 20 something nerds in hungary (most of 20 something everyone in hungary) talk like this, so it's rather realistic in that manner,
I'd just like to know if the translator took some liberties, or is it the same with the original script (spanish, I think)?

It's the same way in English, I know that. It's a shame, it really doesn't add anything to the game.

Although I play the game in English, I can tell you that in Spain, swearing is a very common thing. So the game is intended that way, no doubt.
When I studied German or English they pointed out that we should not swear as much when we talked in other languages, because it is not as common in other countries.
But yeah, in "everyday chat" it is very common to sound like Tony Montana and introduce a "fuck" every sentence at the very least.
(We can be polite too, do not get me wrong xD. Is just that swearing is not seen as bad as in other countries, at least in a friend context of course.)