Complexity and evolution

It seems it is the rage that these two concepts are synonymous. Therefore complexity is the answer to every problem and situation. It's even to the point that an every increasing hierarchical complexity is the goal of evolution itself. 

But is it? Can we learn something from evolution about our obsession with complexity? Where does it functionally fit in our current need to adapt to our problems? Can it indeed contribute to them? Is there a time for degrowth? How can simplicity figure into the equation?

This is from the Scientific American article "Evolution: The Rise of Complexity":

"Of course, while I focused this post on how complexity arose, it's important to note that more complex doesn't necessarily mean better. While we might notice the eye and marvel at its detail, success, from the viewpoint of an evolutionary lineage, isn't about being the most elaborate. Evolution only leads to increases in complexity when complexity is beneficial to survival and reproduction. Indeed, simplicity has its perks: the more simple you are, the faster you can reproduce, and thus the more offspring you can have. Many bacteria live happy simple lives, produce billions of offspring, and continue to thrive, representatives of lineages that have survived billions of years. Even complex organisms may favor less complexity - parasites, for example, are known for their loss of unnecessary traits and even whole organ systems, keeping only what they need to get inside and survive in their host. Darwin referred to them as regressive for seemingly violating the unspoken rule that more complex arises from less complex, not the other way around. But by not making body parts they don't need, parasites conserve energy, which they can invest in other efforts like reproduction. When we look back in an attempt to grasp evolution, it may instead be the lack of complexity, not the rise of it, that is most intriguing."