I realize that even the liberal Kevin Drum and other Very Serious people are virulently opposed to the trillion dollar coin, but from my perspective, here’s how it works: Republicans need to know that they can’t win the debt ceiling battle. That whatever childish stunt they pull, we can pull our own stunt that will trump theirs.
A lot of politics is psychological, and for the last however many years, Republicans have been much better at conveying the impression that they were going to win whatever battle anyway, so Democrats should just give up. Part of conveying that impression involves making your opponent think that there’s nothing you won’t stoop to in the interest of winning.
That’s why I like the trillion dollar coin: it’s ridiculous and bringing it up at all sends the right message, that Democrats will win this battle, no matter how silly a tactic they have to employ.