If this was being done by a responsible, fiscally solvent, constitutionally restricted government, I would have no real qualms about it. Would it suck? Sure, but it would be responsible caretakers straightening out past debt not this bunch of adolescents with no-limit credit cards.
Except that in most cases a governmental entity, i.e. probate court, with the force of law, reviewed and settled those estates. If another governmental entity such as the IRS, has a late claim, it’s should be with the probate court, not the descendents of the supposed debtor. I am subject to IRS imposed deadlines. Why should the IRS not be held to court imposed deadlines?
People should not be made responsible for the debt of their parents