I think all mowers except non-motorized push mowers should be illegal for home use. You want a big, manicured lawn? Well then you gotta work for it, buddy.
Most properties where I live have huge grass lawns, but I almost never see anyone actually using them. The only time anyone is out on their lawn is to mow it, and they all use these low-effort riding mowers. Every single nice day (and I live in the maritime Pacific Northwest, so warm and sunny days are precious things) is always filled with the din of mowers, leaf blowers, hedge trimmers, and other gas-powered tools of ornamental landscaping. And for what? An ecologically-devoid patch of land that even the landowner isn’t utilizing.
Which makes me wonder, are there literally no alternatives in South America itself? I know Argentina has gone to shit, but what of the other countries?