The politicians aren't going to be persuaded by this, they're corrupt snakes who are very open with their lack of regard for actually useful programs.
Chandra et al are dying because Congress wants to pour more money into SLS (and thus into Boeing), but is unhappy that NASA isn't playing along (choosing SpaceX and a similar lander from Blue Origin, buying high risk, lower cost robotic landers from space startups). So they give NASA more money than they ask for when it comes to SLS, dont allocate enough to other Artemis goals and cut the overall budget.
Chandra et al are dying because Congress wants to pour more money into SLS (and thus into Boeing), but is unhappy that NASA isn't playing along (choosing SpaceX and a similar lander from Blue Origin, buying high risk, lower cost robotic landers from space startups). So they give NASA more money than they ask for when it comes to SLS, dont allocate enough to other Artemis goals and cut the overall budget.