[NamTaf]

Because not every engineer is a programmer. Especially not every non-CS/EE engineer. Especially not every non-CS/EE engineer over ~30.

Yes, they've been exposed to programming at some level, but they are not programmers. Even as a late-20s mech engineer, I am far above most of my peers when it comes to slinging code and I'm a rank amateur. Many wouldn't even want to touch it.

You're mistakingly assuming that the path of least resistance is "teach non-CS/EE engineer to program because they are technically minded and can easily pick it up" rather than "adapt mathematical process to suit excel".