IMHO this is just the next step of senior leadership telling flyers to quit because they will be replaced.
It makes sense bringing fresh from basic trainees because it will give data on what is necessary/how far we can cut to produce some sort of pilot.
I think a lot of people here are looking at this the wrong way. The AF won't say it but the question is how much can UPT be shortened to make 1600 pilots per year number the new normal. That's what this experiment is for.
In other words, this will enable the AF to care even less about retention and maintain the status quo, because faces in spaces, you're replaceable, red line/blue line, yadda yadda yadda.