Well let's examine what currently happens. They have the F3 series and the F2 series where they can get experience. Same guys, if they're good enough, are on F1 simulators all the time and get F1 tests. Should a seat open up in the 20 available, they get consideration, at the tender age of 18 or younger.
Now the plan is to put them in some shitbox occasionally to do the same thing. Like F1 Academy, this is really a plan to add to the entertainment package for marketing purposes. It's a gimmick. You want to give them more experience? Add to the F2 schedule.