Yay we temporarily fixed a problem that wasn't a problem until the fucking President made it a problem.
The last president made it a problem by bypassing congress to institute illegal subsidies to prop up insurers, and the congress by crafting a bill that everyone knew would require said subsidies, because they were too chickenshit to admit the true costs of the bill to the taxpayers upfront.
Trump is an idiot, and him eliminating the subsidies was less a principled move than a blackmail tactic to try and get congress to do their job, but he was actually correct in this particular narrow case, and the courts would have forced this move eventually anyway. Instead of wasting money defending the payments in court, it makes sense to kick it back to congress and get them to fix the law.
Just because congress refuses to do their job, doesn't mean the executive branch can take over powers that are explicitly granted to them.