A bit of context from the article.
The Biden administration started to heavily subsidized some health care plans with Covid as the backdrop, and now those temporary measures are ending.
In so far as I have found and I might be wrong, congress never voted to fund and subsidize those medical plans indefinitely.
Now health insurance companies are raising their rates on those specific plans since the government is no longer partially funding it, or perhaps not funding them as much.
Then I am convinced the insurance companies raised their rates more then strictly required as they nearly always to to make even more money.