But the point is not to count it as spoiled, it’s to have NOTA as a printed option on the ballot so you can have accurate results on it.
But what difference does that make, they are still ignored and nothing will be done about it. Political parties already know voter turnout for different demographics and where they can get more votes, their internal polling gives them accurate information about policy acceptance across different demographics. A NOTA doesn't tell them anything they don't know and is too granular to be as useful as polling