> Technically, from an economic perspective, it's debt.

Isn’t the important difference that it doesn’t trigger bankruptcy on default? Economically it might not be that different but it has some significance legally because the courts have some fast tracks that trigger bankruptcies (IANAL but that’s my layman’s understanding).

If they “default” in this case it will lead to lawsuits that they will almost certainly lose but in the mean time they kick the can down the road hoping to recover on general economic headwinds like lower interest rates. IMO the risks are obviously correlated here but I’m betting short term incentives drove this mess.