I dunno, I think the swearing wasn't done well - it's like they are trying too hard to be cool. "Sgt Johnson" here in these first levels, the guy giving you orders, is like a videogame cursing hardguy stereotype.
I would have much rather had OF pandered less to the adolescents, and tuned the game for a more mature crowd. Take for example how professional the original Xbox Ghost Recon did mission briefings. Made you feel like a elite warrior...instead of some scrub tool taking orders from a fool.
At least BF:BC2 tried to be funny with their cursing.