Ezra Klein is dead-set against it:
The argument against minting the platinum coin is simply this: It makes it harder to solve the actual problem facing our country. That problem is not the debt ceiling, per se, though it manifests itself most dangerously through the debt ceiling. It’s a Republican Party that has grown extreme enough to persuade itself that stratagems like threatening default are reasonable. It’s that our two-party political system breaks down when one of the two parties comes unmoored. Minting the coin doesn’t so much solve that problem as surrender to it.
The platinum coin is an attempt to delay a reckoning that we unfortunately need to have. It takes a debate that will properly focus on the GOP’s reckless threat to force the United States into default and refocuses it on a seemingly absurd power grab by the executive branch. It is of no solace that many of the intuitive arguments against the platinum coin can be calmly rebutted. It’s the wrong debate to be having.