It's interesting because it actually endangers the junior dev job market in the present.
And in the near future the mid/senior level will have no replacements as we've under-hired juniors and therefore don't have a pipeline of 5YOE/10YOE/etc devs who have learned to stop being juniors.
I see it the other way, assuming these tools keep on improving you will only need junior developers as there's no point on knowing more than the basics about programming to get a job done.
You say this like it is incremental improvement needed, or that we can see signs of a major shift in capabilities coming. Yes, people are predicting this. People were predicting personal travel by jet pack at one point as well.
And in the near future the mid/senior level will have no replacements as we've under-hired juniors and therefore don't have a pipeline of 5YOE/10YOE/etc devs who have learned to stop being juniors.