I get your point. From my perspective, repetition is more about action than content.
so you can really turn the content into something really fun, exciting or less painful.
I didn't play the game you mentioned, thus I don't have much things to say about it, but if players keep doing exactly the same things while grinding, well it's not a surprise that content will get boring eventually.
trying difficult, not logical or even not possible things might enhance the joy&experience you will get from the content.
I like to add some spice&sauce to my meal, you know.