I'm not sure this generalization applies to even a significant portion of either designers or programmers. As a human who uses tools, I want my tools to be reliable first and foremost, but since 100% reliable is a fantasy, it is always wise to be both on the look out for more reliable tools _and_ to know the tools you to use constantly intimately, inside and out, so you are more productive and less surprised by gotchas that the tools have. A tool that fails unpredictably or in a way that can't be fixed is a useless tool. You must know the limitations of your tools, to not know the limitations is to be unable to recognize when something better comes along. Not exploring new options and not being well versed with your current tools, or just doing one or the other, is wearing blinders.