I see this take brought up quite a bit and it’s honestly just plain wrong.
For starters Junior engineers can be held accountable. What we see currently is people leaving gaping holes in software and then pointing at the LLM which is an unthinking tool. Not the same.
Juniors can and should be taught as that is what causes them to progress not only in SD but also gets them familiar with your code base. Unless your company is a CRUD printer you need that.
More closely to the issue at hand this is assuming the “senior” dev isn’t just using an LLM as well and doesn’t know enough to critique the output. I can tell you that juniors aren’t the ones making glaring mistakes in terms of security when I get a call.
So, no, not the same. The argument is that you need enough knowledge of the subject call bs to effectively use these tools.