Absolutely what happened to me.

A class is not a car, you don't explode your car when you go off road, create a SUV using the base of the car along with what's in the trunk, then do it back again when you reach a road.

Analogies are a terrible way to teach. Both dogs and cows are mammals with 4 legs and a tail, but you will have an interesting experience playing catch with a cow and trying to milk a dog.

I only learned what a class is and why it matters after writing a bunch of C spaghetti code trying to keep track of special_fn_for_strings, special_fn_for_ints, special_fn_for_big_ints, etc. You can teach that way quite easily if you have more than a week to do it in.