Would you fund your kid's IVY league education if you could?

I got to see my sister's family at thanksgiving. She has three kids, the oldest of which is graduating high school in May. My nephew has been submitting applications at various top-flight schools. He's right at the top of his class, his test scores are off the charts (he scored a 29 on the ACT as a sophomore, now at a 34) and has been groomed for success since infancy. His mom is a nurse practitioner and his father is an MD (nephrology).

Princeton and Harvard are at the top of his list, but he's also submitting applications to Evangelical and Catholic institutions like Notre Dame, Georgetown, Wheaton, Holy Cross, etc. He wants to major in Philosophy for Pre-Law.

His parents are strong conservative Christians and said, in a very matter-of-fact tone, that they will refuse to help fund his education at radical left-wing IVYs and state schools, even going as far to exclude left-leaning Jesuit schools like Fordham, LU-Chicago, etc for their Marxism, and will only pay for "sane institutions." This caused a lot of tension at thanksgiving and is clearly making their boy distraught. My nephew seems pretty set on going to an IVY (if he gets in) no matter the debt he will incur, whereas his mom and dad are pretty loaded and willing to fund his education elsewhere in full.

I told them that most university campuses will expose him to marxism/leftism, especially in the philosophy department (I have an MA in Philosophy) and that it's just a part of his generation's experience. They weren't having it.

Thoughts?