Whoa, I'm not sure I'm in favor of that.
An acre is 165 ft by 264 ft. That's tiny. And if there are no trees, there is little assurance that the projectile will remain within their property. Also, there's a noise ordinance. I don't see how they can pass this simply.
Rural plots with lots of trees and maybe 10 acres, sure, but it would still be noisy for neighbors. They'd have to enact 'backstop' rules, and 'time of day to shoot' rules, and caliber of firearm provisions.
I mean it's good they're relaxing the laws on firearms, because it makes it more common for LAC to have and use their guns, but it's not simple to legislate and control, imo.
ETA: thanks TFred for the updates, as always.