Maybe. But socialism did originate as a Christian heresy.
No, not really. Henri de Saint-Simon was very non-religious when formulating his technocratic utopian socialist ideas. Robert Owen was a big opponent of any religion for most of his life, although a convert to “spiritualism” (neo-Paganism really) at the end of his life. Pierre Leroux was a pantheist. English socialists were atheists as a rule.