Why don't we use awnings anymore (2022)

But yes, let's bring back the awnings too. Sometimes the low tech ways are easiest and best. I will say that I don't think awnings alone can save a stick built modern house from the heat. Part of the key to old houses staying cool was high thermal mass: lots of brick and stone that could stay cool during the day. As great as modern insulation is at keeping hot and cool separate, a modern insulated wall doesn't cool it's surroundings like a high thermal mass wall would.

Moving to a world where we combine passive cooling and high thermal mass construction with the benefits of modern tech will be key in my opinion.

(Also, removing a given amount of summer heat via air conditioning is considerably cheaper than adding that same amount of winter heat via gas or heat pump in many climates, because the indoor-outdoor temperature difference is much higher in the winter.)

Our house (Australia) has trained vines on the sunny side that are thick with leaves and grapes in summer, bare and leafless in winter.

Ideal for seasonally sensible shade and warmth.