The more I think about it, the harder I think it is to create a program which doesn't result in this once combined with other programs. Any cutback, no matter how small, will be combined with all other cutbacks of all other programs, existing and future. As long as these benefits are independent, there is a that the sum of all the cutbacks will outweigh the raise that caused the cutbacks. Even if the max cutback was 10%, meaning it would take a 75k raise to remove all benefits, when combined with 9 other equally generous benefit programs and income tax you still end up with a loss.
When adjusting for the phase out being for optics limiting how the phase out works (as all phase outs for optics would tend to look similar to meet similar expectations), the risk of a raise resulting in lost total income isn't easily dismissed.