Then put the money saved towards allocating tens more top, full-time, aligned engineers to projects.
When I see leaders of a non-profit personally drawing more than is necessary to lead a comfortable life, I see a conflict between the mission and personal enrichment.
(There's the argument that non-profits need money, and supposedly you can't get good people to generate money except by hiring people who are personally money-motivated. But the evidence I see is that it looks like money and power potential attracts self-interested careerists, and you get people building fiefdoms, and incestuous relationships among them. Get an honest, smart, true-believer board, and anyone who tried to draw millions of dollars in compensation, or assemble an org chart of careerist execs, would get a regretful, "Sorry, this isn't that kind of 'non-profit' vehicle for wealthy executive lifestyles and careerists, and we don't seem to have alignment", as they gently dropkick the misaligned people out the door.)