I'm not saying webgl or oreos will replace artists/baking. I'm saying they can (should?) view programming and computers in general as new tools to expand their art.
Your arguments are based on the fact that you know as a programmer how much it helps you. But you are trivializing the years of experience and knowledge it takes for someone to master a craft or profession.
Just because some chefs with decades of experience figured out how to mass produce relatively poor quality cookies does not mean that it will be a snap for those chefs to spend years learning how to program well enough that they can create Star Trek replicators.