This was played out already, albeit in a different scenario.
Over 25 years ago I was admitted into the SUNY Binghamton (NY) CS masters degree program. I had no CS training at all and did not qualify. However, their affirmative action program included something like extra entry points for veterans so I got in. I was required to take tough summer long CS course, along with many African American and female students. It brought us up to speed enough to compete next semester with those who were already knowledgeable . Otherwise we would not have made it.
Affirmative Action students spent their own money and their own time. The reward for America was a raising of the skills level for a lot more people, white (me) as well as black. I don't know if AA like this is still legal, but what Google is suggesting - the effective sequestering of unprepared individuals until they are ready - is a good idea.
PS: I finished 11th of an original 100 on the MS overall final