I'm going to speak up too; I find that Jtdirl and 172 have very very similar behavior, and oppose Jtdirl's nomination on the same grounds as 172.
I realize this is not something that most people are going to care about, now that Lir is considered the archetypal troll, but if you take a look at History of the Soviet Union's talk page, Susan Mason seemed very willing to discuss edits with Jtdirl and 172. Jtdirl and 172 told me that it was worthless to discuss things with Susan Mason, since they are an evil evil banned troll, etc. I said "Just humor me, outline what's wrong with Susan Mason's edits, and maybe we can work out a compromise". I received some notes on my talk page that I was being naive in thinking Susan Mason could cooperate and that everyone else learned long ago that everything that Susan Mason does should be reverted. Well, from the experiences of others, this sort of treatment doesn't seem to be reserved to people widely considered to be trolls.
Fred Bauder wrote:
I oppose Jtdirl's nomination for the same reasons as Cunctator. Every indication is that like 172 he will stongly engage both in historical revisionism and abuse of other users.
Fred