> I think you underestimate how many people blindly copy examples without understanding them. Safe example code results in more correct programs.

Even if this is true, the reasoning here is disturbingly short-sighted. Copying code that you do not understand is unacceptable behavior, and I'd say the sooner it blows up in your face, the better. The goal of code examples is to illustrate how things work in a simplified way, and code without error checks is often easier to understand at first. Imagine a hello world with all the possible error checks. That would be incomprehensible.