Nitrogen content in your piss is pretty high and can end up killing your grass in excess. It looks like OP’s husband pisses in two spots right beside the stairs so the nitrogen will accumulate there.

Judging by the shrubs there could be a little garden down there the wife cares about, or she wants the habit cut so there’s not a yellow splotch that guests are being funneled between.

… Or plain old prudery. Who truly knows~