Yes, it is. Freedom of religion means being able to practice something other people might not like. We know the limits: human sacrifice and polygamy. The USAF has a reputation of being the most overtly Christian of the armed forces. I like it, being a Christian myself. However, if a pagan officer manages to get through the Academy, then they need their chance to worship.
The government is aggressively trying to undermine the Christian character of the Academy. “Diversity” is now the watchword in admissions. This means that more under qualified people will be admitted to satisfy the diversity god, and they will be passed through unless they commit a crime that can’t be covered up.
Rest assured that mentally ill girls who think they are “witches” will be admitted if they can find any that could possibly be carried through. They are also scouting for sodomites. Just ask the ALOs.
Affirmative action and “diversity” undermine the competence of the Armed Services and are an attempt to gradually bring the Services into alignment with the left.