Realistically this doesn't change much since it's extremely unlikely a foster kid wouldn't qualify for a full ride prior to this.
The only people who really get screwed are middle class families who make too much to qualify for aid, but can't really afford to pay for school.
It is perhaps reflective of this state's small size that there has been almost no national news coverage of the change, and even a lot of websites comparing state programs still haven't been updated to include the new changes that significantly expanded eligibility.
New Mexico also makes it relatively easy for students to establish in-state classification after moving into the state for college, so we can expect a number of out-of-state students to take advantage as well.