Perhaps a way to stop erosion around the end of the downspout?
Or they could just buy a splash guard
Probably not to control erosion at the end, but rather to get the water away from the home. Mission accomplished
Looks like a little settlement here as well as some negative slope.
A self-defeating fix. Pinching the end of the downspout discharge to slow the downhill erosion will cause water to back up over the gutter during a heavy rain event and fall near the foundation.