No, they should be able to provide a copy of the offer showing at least the loan value will be paid in cash. If it's financed, then almost assuredly the mortgage company will ask for a letter of explanation as to the source of the funds. And if close to closing, the closing agreement/reconciliation should show the loan as either itself as a source of funding, or the participant bringing at least that much cash.
I think the PA still needs to prudently act like a commercial lender; hardship doesn't get repaid, so self-certify made sense since ability to repay is not relevant, and an employee's personal needs are not the business of the sponsor.