First, the OP has a point and trolls are really irrelevant to the issue. The insults have to stop and the general tone of the board could be a good deal more civil. If you respond to trolls by jumping into their threads with both feet, thinking you're going to show them how wrong they are or get them to stop posting, you're sadly mistaken. Those responses are exactly what they want and saying it's their fault for trolling is juvenile. You can't control what they do, but you can control your response. If the poster in question is a known or suspected troll, the only appropriate response is to IGNORE them. Use your ignore list, don't read their threads and they will shrivel up and disappear. All you "Troll Hunters" out there are the ones giving the problem a life of it's own. Engaging them gives them energy - if you don't respond, you'll kill a lot more trolls than by arguing with them.
Second, sadly, yes, everyone has the right to plaster the board. It's part of the deal of an open message forum. Even if a gang of undercover Jets fans sets up camp to annoy us, it STILL doesn't give us the right to insult them or try to run them off. They have just as much right to this virtual location as we do. It is surely a pain in the *** when the front page is flooded with 100 copies of the same thread, but that's why an active moderation team is so important to any successful message board. Also, there are more pages than just the first...if you don't find anything interesting there, you can click on or use the search feature. I often search for posts by my favorite posters when there's nothing interesting on the first page.