My salary is already the company's business, they're paying it. What's worth fighting against is the idea that how I spend (or save) that salary, and worse how

My salary is already the company's business, they're paying it. What's worth fighting against is the idea that how I spend (or save) that salary, and worse how some average of how everyone independent of job and salary in a geographical area spends their money, should directly influence the salary itself.