No, but it stops straight scraping, and requires a scraper to do a little bit more work to copy the recipe.

Not much extra work surely. Most recipes are on sites that use the same template for every recipe so it's pretty easy for a scraper to find the ingredients and method. The structure is usually even labelled with meaningful class names on the elements.

I think the question is “is it possible to split recipe from BS story programmatically”

Generally yes. Most recipe blogs use semantic markup so that Google recognizes it as a recipe, which also makes it easy to scrape programmatically.

No