[Archonical]

That's a big generalization. Do you have any data to back up that first claim?

For German, knowing grammatical cases {Nominative, Accusative, Dative, Genitive} has been helpful as an on-ramp to using the language repeatedly correctly.

[ACCount36]

Note the term you're reaching for: "on-ramp". Even in your own experience, theory is a crutch.