I think that AI alone will not really take over any jobs. We currently only use it as you said, AI assistance. It has basically become a useful tool that helps us and makes the job easier. But the job still remains as is.
In the future when we have even newer technologies then perhaps a mix of those technologies will take over old jobs. But right now only humans are versatile enough to get any and all facets of a job done. That is not something AI can do.
From the sophistication created by AI, it will not happen in the near future that AI will replace human jobs, but it will take quite a long time, but AI cannot replace all human jobs, maybe only a few parts are needed because the process is very long to create and replace human jobs.