I mean if you want to talk about sequestering carbon, there’s all sorts of natural lawn options that aren’t actively planting an invasive species that has proven to be really bad at doing any sort of water filtration or absorption. In fact, I’d wager that planting (and letting grow) prairie or whatever your native biome supports probably sequesters more carbon, assuming your native ecosystems aren’t straight up desert. Even if they are, you’re now using so much less water that it’s a huge net win there.