If you wish to argue that other aspects are what have led to trolling being dealt with differently, then you’re going to have to argue that. I’ve directly seen how people mentioned in the troll thread get taken out faster than those who don’t. I’ve directly used it to figure out if my feelings that someone was trolling were shared by others.
Most boards do let you call someone a troll. I do it all the time. I tell someone “I think they’re just trolling you” or “this comes off as if you’re just trolling.” I’ve never gotten in trouble for doing so.
People often come in and make a single post (or a handful of posts in a short period) and then leave. I find it dubious to claim they took the time to seek out the Troll thread and see themselves mentioned in it, and that’s why they never came back. The only newbies who check out threads on trolling are generally themselves trolls looking to check if people are talking about them.
I like the troll thread. I see none of the negative traits you are assigning to it. I see a better board since it was implemented. The traditional wisdom that you dare not ever talk about trolls is just something that lets them flourish, just like any other topic you don’t actually talk about. I’ve even learned some troll-tactics I didn’t know about before.
In my opinion, you need a very strong case to argue to argue that something needs to be censored. I need evidence that the thread is bringing in more trolls or scaring away more newbies. My own perception is that it is actually helpful.
Sure, there’s the common wisdom that talking about trolls is bad. But, as I’ve said, that has never been my experience. Engaging with trolls beyond a single refutation is bad. But talking about them generally isn’t. Most trolls aren’t really in it just to see their name mentioned, but to start fights.