Is Jesus life, not simply his words, the gospel?
Jesus’ life is the gospel to the extent that he was loving God and loving his neighbor. He was in constant communication with God, always trying to do what God wanted, and always helping others by curing their ills, giving them advice, or just spending time with them.
It’s not clear whether Jesus was actually that poor. From what I have read, Joseph was actually a reasonably skilled worker and Mary was more educated than the average poor person. They were more like comfortably middle-class. You don’t see Jesus out begging for his dinner. He also seems to have relied quite a bit on the largesse of others who presumably were working. Peter and the lot are still out fishing from time to time even after they start following Jesus, a rich man donates a tomb for Jesus, and somebody had to buy the Passover dinner and may even have had to pay some rent on that upper room.
What Jesus was, was detached from material possessions; he put people ahead of those things even though he wasn’t above enjoying some good food with friends, or appreciating that time when a lady poured some perfume on his feet. Money didn’t run Jesus’ life. He specifically rejected the idea of being an economic messiah when the devil was tempting him.
So in that sense, we should be like Jesus. We can enjoy some material goods if we also share our wealth and do not put the need to make money ahead of the need to serve others. Where one draws the line is up to the individual, but it seems pretty clear all throughout the Bible that just being well off, in and of itself, was not necessarily an evil thing. Wealth does expose you to a lot more temptations and pitfalls, which the Bible also makes clear, multiple times.