I would agree. I would agree and point out that they have talked that way and, frankly worse, since the birth of the Corps. I would also agree that members of other branches speak that way as well. I would point out that it is quite common and anyone who has served has likely heard it.
I would go on, however, to point out that it is common among privates in their teens and twenties. It is not nearly as common among senior NCOs and officers. In fact, it is almost unheard among officers and senior NCOs at the company level and above. Those who attain leadership positions tend to outgrow the juvenile antics of privates. Certainly this is the case as they reach their thirties and forties.
In fact, I find it hard to imagine a Marine officer, at company grade or above, with a pregnant wife and daughters at home openly talking like that in a work environment.
I would also point out that any field grade officer who boasted about violating the prohibition against adultery in Article 134 of the UCMJ would unlikely to maintain a leadership position. If he were to be shown to actually engage in adultery with the wife of another man, it is unlikely he would be allowed to remain in the Corps. He would certainly be deemed unfit for a high leadership position.
I would agree, however, that adolescent, under-sexed, testosterone addled privates do, along with all manner of other jackassery, talk like that.