Yes, the other side of the story is that I disrupted the flight. According to the police, the FA told them that I yelled at him (which is true, since he said he was having trouble hearing me) and that I repeatedly pressed the FA call button (which I had to do twice, since he walked away without addressing my complaint the first time). This, apparently, constitutes flight disruption.

Looking back on the incident, there are two things that I can think of that might have made the FA defensive. The first is when I raised my voice in the aisle when he asked me to repeat myself. The second is, during our first conversation, he asked me what I expected him to do and I replied, "Something." That is when he walked away. I also think he didn't like the fact that I was detailing a whole list of things that had occurred in the front of the plane while he was chatting with the other FAs in the back. He probably inferred that I was criticizing him for not attending to the pax in F, which I kind of was.
To let the FA know that there was a pax that was falling down drunk who had ralphed in the F lav. I might have also mentioned to the FA that Drunk Guy took the snacks, which, by the way, he didn't eat. According to the pax in 1B, the drunk guy saw the snack basket sitting on the counter, helped himself to some of what was in the basket, and stuffed the booty in his pockets.
The other officer, the one who interviewed the flight crew and the other pax, was NOT happy. However, there was no discussion of citing the FA. In fact, it was the lack of response toward the FA's behavior that led me to start this thread. To wit, if an FA thinks he or she is in trouble for behaving badly on a flight, can they automatically get away with it by manufacturing a "flight disruption" so their original behavior is not scrutinized? If so, I would expect to see the number of similar incidents increase as more FAs realize they can get away with it.
I did see where he was sitting, I have written a complaint. I also reported the pax's identity and behavior to the police at GRR. Neither Delta nor the GRR police seem interested in pursuing action against anyone at this point. This leads me to question whether what the FA did is a sound strategy to avoid scrutiny for their own misdeeds.
The captain did not approach me afterward. The police officer that interviewed the flight crew escorted the crew to the exit while the other police officer and sergeant were answering some of my questions.
I did not actually see any vomit. The smell was enough to turn me back. I don't do well with the smell of vomit. Kind of like Chunk's prank in the movie Goonies.