Pointless. They are OO courses, not FP courses. You have FP courses already covering that.
> second that under the hood everything can be shoehorned to object model.
You do not need lambdas or FP for that.
So, what's the point of lambdas and FP in a OO course?
If the intent is actually to teach polymorphism and encapsulation, both of those can be done in raw C.
However, polymorphism and encapsulation have existed for much longer than “OO” languages. What is stdout? Seems pretty polymorphic to me. How does one gain access[1] to a variable declared in a .c file that is not exposed via the header. That’s encapsulation…
[1]: there are of course ways, but they are often also true of private members of class instances too.