I don't disagree with you that a reasonable way to cope with the current problems is to ensure everything that "counts" is done in a controlled environment, but pedagogy and its goals are vast.
There are things you learn from spending several days structuring a 20-page argument that you will not learn (and cannot assess) from oral examination or a 5-paragraph essay written in a blue book.
There are things you learn from spending several days structuring a 20-page argument that you will not learn (and cannot assess) from oral examination or a 5-paragraph essay written in a blue book.