His net worth is "only" 3 million dollars, if you serve half a century in Congress you could accumulate this kind of money (not to mention inheritance and royalties from all of the books he wrote).
What idea is that that a socialist needs to be poor? Is the Pope poor? Was Engels poor?
You have absolutely no idea what socialism means and this simple line exhibits that pornographically clearly...
Engels used his inherited wealth to promote socialism just as Bernie could use his moderate wealth to promote social democracy. I don't see any contradiction here.
Couldn't the same be said about capitalism, to some degree? According to the article, Musk has become $154 billion richer since Trump is in power. How did this benefit you?