There is no issue hiring juniors, they have a lot to learn and they should be coached through it for sure. That mid level, help coach juniors, is also not an is

There is no issue hiring juniors, they have a lot to learn and they should be coached through it for sure. That mid level, help coach juniors, is also not an issue. But I would rather hire a junior analyst or a junior engineer than a junior data-scientist. The breadth of what they need to learn before actually delivering value is quite vast. I can hire an analyst or engineer and quickly they will be able to learn, get good at something and deliver value. After 2 years they can easily grow into a data-scientist with the good base they have had from their previous positions. Some organization essentially rebrand analysts positions to "junior datascientist", but I believe this make it a mismatch of expectation for graduates getting out of school.