Yes, complexity is the enemy. However, I'm afraid the answer isn't that simple. If I understood you, you advocate using a low level language, mainly because that makes it hard to "get fancy." But by doing so, you are forcing complexity to go up significantly in a different way. For example, how much harder would it be to code a make tool like Rake in C than in Ruby? Yes, C might handcuff the programmer from getting too fancy, but it will result in 2 or 5 or 10 times more lines of code, and that in and of itself is complexity -- which, as you correctly stated, is the enemy.
Not sure if more lines are per definition more complex. Often they are, but check many Ruby (and Rails) gems and apps; they hide a lot at the expense of easy comprehension. That's why it is often referred to by inexperienced programmers as 'magic'; stuff in Rails works nicely if it works. If it doesn't work, you get to wade through miserable stacks of meta programming (with the worst debugger ever made). Give me C or Haskell (yes I know, big difference; I'm just skilled at both) any day, complexity wise. It's more about the programmer than the language of course, but the Ruby community generally seems to suffer from making stuff non transparant.
