Used a couple of US recipes recently and most of the ingredients are in cups, or spoons, not by weight. This is a nightmare to convert. Do Americans not own scales or something? What's the reason for measuring everything by volume?
I've been cooking a lot lately. I don't measure anything. I eyeball my most stuff anyway. If I understand the recipe, then I know how much is needed. It takes practice, but it's much easier than weighing or using measuring cups.
Do you really believe that the people who wrote the recipe measured everything to perfection while keeping score of the exact amounts and timing through trial and error? No, they didn't. They made something and then estimated roughly how much they used when writing the recipe afterwards.
But then they use the recipe card and make the dish and realize “oops need more of that” Then they update the card and make sure the recipe is correct.