“They want to eliminate national parks” is a very simple way to get just about anyone on the Stop Project 2025 train. Are there much more glaring and life-threatening goals of P25? Yes but even your most bigoted cousin does not want to see the parks system sold for parts.
Just got off a discussion on the main thread about this: Eliminating National Parks isn't written in the plan. They are, however, looking to downsize some National Monuments.