The main argument that Jesus was a communist is that both during the ministry of Jesus, and in the early life od the Church after the Resurrection, the diciples lived communally and shared all their assets. However, there is no evidence that early Christianity preached that this should be forced on people. This lifestyle would eventually be centered in the monastic life, where even today monks and nuns share all their assets and live a communal life. It has worked in Catholicism for about 1500 years, but it only works in monasteries, not in the whole population. It works when there is a shared degree of faith, and that God is central to their lives. Replacing that with a materialist atheist communism enforced among the whole population doesn’t work.
“It works when there is a shared degree of faith, and that God is central to their lives.”
It has worked in very few instances other than monasteries. Such as Jesus People USA (look it up) a small group in Chicago. Various utopian groups have tried it and failed (New Harmony, Indiana)
I think most people here get it right. Communal living was common in the early church partly because of the poverty in Jerusalem (Paul kept taking up offerings in his travels).