This diary will be short, to the point, and possibly ill-advised. Nonetheless...
I wish to offer a simple technique for ending and/or averting pie wars: Respond to the writing, not to the writer.
Dump out those mental databases of "good folks" and "bad folks". There's little use in attacking people on (what you perceive as) their personality traits. Obvious trolls will be obvious. Many other "trolls" will turn out to be real, sincere, and possibly misguided people. Some "trolls" will even turn out to be right.
Seek not for trolls, for the troll you seek just might be you.
And if this means a few purity trolls or concern trolls are allowed to post unhindered? Meh. Maybe, if they stop getting the responses they're looking for, they'll get bored. Maybe not. But keeping this site troll-free isn't worth the bother.