There is definitely room for multiple languages and indeed there are, all of us agree with that. I think the discussion is not about whether the world needs multiple programming languages it's about how some are negatively and falsely painted.

I make a serious point of spending lots of time to correct any falsehoods I find made about Perl typically by Python or Ruby programmers who don't know squat and haven't kept up with Perl in 5 years. As I've written before these false statements are never retracted even though they are proven to be false and they hang out on the web, get indexed, and people see them and start to believe them when they see all this crap. It's analogous to Fox Noise on TV, don't bother to retract any lies and then the lies become true.