There seems to be a lot of disagreement regarding the true intent of the meme/myth. If you didn't actually create it, it's going to be difficult to know which message was intended. It could be any one or even a combination of:
- Wealthy people don't care about impressing others as much as poor people and it shows in their spending habits. While poor people tend care so much that they overspend, often to their financial detriment.
- Wealthy people got/stay rich by being frugal. Broke people stay/fall broke by spending freely.
- Wealthy people don't look "rich" and tend dress more modestly, while the people actually wearing "expensive" clothes are really broke.
- This race of people is bad with money. That other race of people is good with money.
Excluding #4, I feel there is some merit to all of these ideas, myth or not. Sometimes we get so set on one position that we ignore anything else that can be taken from the subject at hand. I see no issue with anyone seeing this meme and thinking: "Maybe I should reconsider my spending habits".
Another thing to keep in mind, as with most things online, the meme is showing extremes. The majority of non-rich people aren't spending crazy amounts of money on cars or clothes. The majority of wealthy people aren't shopping at the thrift store.