Keep Out!
It’s a smart idea to have a gate installed to notify people and their dogs who pass by that your property is off-limits. You don’t want someone walking by thinking they can lounge here, and you definitely don’t want others thinking their dog can use your lawn as a bathroom!
However, a gate like this is not going to keep anybody out. Why would this even be placed here? It looks much less than a construction project that started and hasn’t been completed yet. It’s so random. But at least it gives the homeowner a good idea that they may not have thought of before.