The Iron fans are doing a bit of harm but that Perl zealotism is one of the things that made it wildly popular in its day. And unlike Perl, Iron development is structured, not "organic" a la Larry Wall/Perl.

I'm not an Iron zealot but I do believe that there rarely is such a thing as bad publicity :)

Who's being harmed?

C has sharp edges, and buffer overflows are bad, we can all agree on that. Still, there are good ways to advocate a language and there are bad ways. Iron fans are in-your-face to the point that it crossed a line for me in a way that no other language supporters have and I haven't coded in C for a long time now so I don't feel like I have dog in the race.