I love this topic and completely agree with the OP.
IMO, this generation of gaming has been the generation of the "M" rated game. I understand that gaming is a form of art and expression and there are mature themes that can be explored. But to this day I still don't understand why an F-bomb needs to be dropped 100 times in a game (being somewhat sarcastic with that number).
More and more games are turning me off with the heavy use of strong and explicit language.
With PoE, I did see that line of dialogue you mentioned and I can only assume where there is one strong expletive, there will be more. I hope this isn't the case, especially with the "fantasy" background this game has. Something about F-bombs in fantasy worlds feels totatlly out of place and off-beat.
This topic is polarizing and many people have strong opions about it on both sides. This is just my two cents worth...