Yes, it's definitely better, but like all of these zero-energy "alternatives" to air conditioning, it feels like a 20% substitute being sold as an 80% substitute.
How is this an alternative to air conditioning? It's an idea to make being outside in the heat mor bearable, not inside. Good shade provides more like an alternative to depending on a car to get around on hot days.
Properly livable landscaping isn't being sold as an alternative for air conditioning in the first place, which makes your comment seem like a complete non sequitur.