Right, but the debt they seek to escape is absurdist debt. Literally inescapable. Something America hasn't had in a very long time. For any other debt like this they'd nice through the motions of bankruptcy and then get on with their life.
Don't hate the player, hate the game, right?
It's not inescapable. Let's set aside for the minute that they can elect to not put themselves into the hole in the first place. Even then, when you have these massive student loans (mine were in the area of about $100k when I was done. Yes, $100,000 US dollars), you have not only many years and low payments to make, if you fall off the bandwaggon and work with the lender, they will work with you. They want their money, as the debt will only get them a few pennies on the dollar if sold or taxpayers pick up the burder, whereas keeping the borrower looped in will net them more.
It can be argued one way or the other if the debt is absurdist or not. In some cases, most likely. In others, pursuing an underwater weaving degree probably just isn't a good choice, no matter what institute a person goes to for that.
The thing about a mortgage, car payment, or credit cards is... if you go under (bankrupt), you lose your house, your car, your credit score and ability to buy things without cash in hand. All personal consequences for personal decisions. While not good by any means, it's not placing the burden on other folk. The rest of the social safety nets in place will catch these people and allow them to rebuild (in theory).
$1.2 Trillion isn't a small number (in fact, a little less than 10% of the US's GDP!). The last figure I saw was that greater than 10% of borrowers are defaulting on their loans - $120 billion dollars (this was in 2013); that would increase our deficit by >20%.
Trust me, I emphasize with people who have degrees that are worth nothing more than the paper they're printed on. I'm in a similar situation - I've never put my degrees on my resume even. It sucked, but it was all my decision, and I wasn't about to have everyone else pick up the tab by walking away from it.