I agree tho, the scene with Gaila wasn't that big of a deal, and was a VERY small part of the movie.
But, like the tit grab in the bar, added nothing of substance to the film.
The "tit grab" gave us (the audience) a reason that Uhura didn't like (or respect) Kirk for 99% of the movie. . . a major part of Kirk's arc here was that he had to earn Uhura's "Captain" (notice that she called him captain 3 times in the movie. . .the first was sarcastic and the second was disdainful). . . at the end, after risking his life and helping to save the earth, he had earned it. For it to be meaningful, however, they had to start from a position of no respect. . . that's what the "tit grab" did. . . not the bar fight, per se, not the crude pickup lines. . .