The lawyer likely sees it as a lot of work for not much return. You apparently expect to receive or have received hardship discharges for the AES and Nelnet loans. You have not told us how much you owe to Keybank, but your lawyer may be comparing that amount to the $$$ it will cost to retain him to petition to reopen your case and, should the court grant you permission, to go through contested proceedings on the difficult task of trying to discharge student loans. If you want to know what your lawyer is thinking, the only way to find out is to ask your lawyer.
I can't speak for threads or posts when you choose not to provide links. If in fact a debt is discharged, the answer would be that the debt was discharged. If you are asking about non-dischargeability, some (not all) private student loans do not meet the provisions of the federal statute that renders federally guaranteed student loans non-dischargeable.

