The joke in Answer 1 aside, it seems like the answer to why everyone in Tezos is so poor is because the cryptocurrency market is highly volatile. It is possible that people in Tezos invested too much in the cryptocurrency when it was at a high and then lost a lot of their money when the value of the currency dropped. Additionally, the fact that Tezos never pamp, or pump, could also be a factor in why people are so poor. A pump is when a cryptocurrency's value is artificially increased, usually by a group of people buying a large amount of the currency. Without a pump, the value of the currency could remain low for a significant amount of time. Therefore, it is possible that people in Tezos are poor because of the volatile nature of the cryptocurrency market and the lack of pumps to artificially increase the value of the currency.
