To the contrary, programmers with the ability to deliver and iterate working code quickly is what is needed -- and especially without overengineering, or inadvertently creating huge future technical debt due to inexperience.
And if there are only 2 or 3 or 5 programmers on my team, and one of them gets sick or leaves, it's far more important to have a big pool of potential replacements who could can get up-to-speed in a couple weeks, not months -- which means a popular language and a straightforward codebase.