To be fair there were definitely still bugs in Om as well as om.next (and both were marked as being experimental and of alpha quality) - however Fulcro came alo

To be fair there were definitely still bugs in Om as well as om.next (and both were marked as being experimental and of alpha quality) - however Fulcro came along and more less took the ideas and took them further and far as I know is actively maintained. I don't use it - but I suspect there was/is probably some kind of migration path.