A close reading indicates the possibility that training would be given preferentially to people from non-traditional backgrounds. It does not indicate that trained pilot recruitment would involve the same bias. It may not even be this, it may be just trying to encourage people who have not seen flying as a career possibility, to get involved.
I once has a conversation with someone involved in the selection process looking for an addition to a department, which at that point had only male staff, one woman having recently been secunded elsewhere. They had 120 candidates, for two positions, only twenty of which were women. The problem was that women were not even applying, because they assumed from the existing set up that they had no chance of getting the job.
So United may be just trying to get the numbers applying up, without any intention to get involved in preferential recruitment practices.