Lawns are also a total waste. It takes so much gas to maintain a lawn that serves literally no environmental purpose. At least fake grass you don’t need to waste gas to cut.
Wild space is great though. We should be encouraging that and discouraging all lawns, fake or real.
Most people cut their lawn with a gas mower. Even electric requires an a mount of energy that is taking it from the grid, which unless it’s totally clean already is increasing dirty energy.
I’ve literally never even seen, or even heard of, a gas mower. Almost all of them are electric (and our electricity mix isn’t perfect, but is better than a lot of places) with the odd one being petrol for especially large gardens, but that’s increasingly rare.
Why the fuck would anyone use gas? That would be awful. Do you mean natural gas from the mains? Hydrogen? Bottled Calor gas? I’ve absolutely no idea what a gas mower could even be and searching is giving zero results that make sense.