I disagree with the OP’S assertion in its entirety.
- The elite schools are need blind so they DON'T KNOW YOUR INCOME AND THEY DON'T GUESS, so how do they know your income to see if you "should have submitted them"
- Admissions officers have repeatedly claimed they will not hurt your chances if the tests are optional.
- Admission officers state these are the least considered out of all standardized tests and are useful for students who have received something other than an A in the subject to show mastery of a subject.
- All this doesn't apply if they require the tests.