Again, I think you're missing the fact that whatever the author had in mind isn't "right". Do whatever feels right to you and as long as your senses are calibrated (there'll be a short period of adjustment while you learn how ingredients work) it'll come out better than if you'd measured and you'll enjoy it more too.
You’re missing that this is a lot of work, and far from everybody is even remotely interested in doing that. Most people would rather be doing useful or entertaining things, not cooking the same thing a thousand times to discover how much salt “to taste” means. Do not assume that everybody’s hobby ought to be cooking.
That requires experience. I have some and have no problem cooking, but a lot of people don’t and have.
