This was Lamarck’s thesis. That the reason we see life at different levels of complexity is that life originates continually, then evolves, so lower life forms of life are members of younger lineages. Bacteria would be only slightly removed from the latest origination, for example. That said, no, it is not a current hypothesis of Biology that life is continually emerging from non living precursors. We haven’t observed any extant natural ecosystems that contain “proto-life,” nor something transitional between life and non-living potential precursors, nor chemical environmental conditions similar to those surmised to have existed 3.5 billion years ago on earth.