Does wearing of expensive cloths, shoes and other expensive things a sign of being poor? Or does it mean the rich doesn't wear expensive things or doesn't leave a luxurious lifestyle?
This is a flawed philosophy! Take any Hollywood or Bollywood celebrities for example. They are ultra rich and their clothes and Jewelries are all expensive. Those are so expensive that no poor person can afford those. At the same time, as depicted in the picture, a poor person can't afford to spend 10 grand on clothing. So don't loose your sleep over such things!
There are many ultra rich people, like Mark Zuckerberg, Bill Gates or Warren Buffet, who doesn't wear designer clothing. It's because their focus is not to look rich and expensive. They are focused on their work and doesn't want to spend time on such things which doesn't add value to their life. This is a mindset of a handful of people in the world.
Even as a common people, not everyone likes to buy designer clothing. So the depiction is wrong and doesn't speak for the majority of the population. However, it closely matches with a culture called "Sapology" which is very famous in Congo and some African countries. Try searching Youtube and you will know why I am referring to this.