I have a foggy memory that the biggest issue is that the way it's disbursed may affect the way it's reported on the FAFSA affecting the amount of financial aid ?
I'm not sure about the FAFSA reporting. But I think there are some new rules and options for the 529 accounts. Primary & secondary school eligibility and also payments toward student loans. This may be limited to $10k. But if FAFSA is affected, it may be better for the student to borrow more and then have the 529 funds go toward the loan.