This is exactly right - the Trump admin claims to have a mandate to do all sorts of things, and they're just unilaterally doing so - in plain violation of the law. If they actually the mandate they say they do, they'd pass laws repealing the requirements they don't like and defunding the programs they dislike rather than illegally impounding the funds and illegally killing programs like this one. Except it turns out that "illegal" is only important if there's someone capable of enforcing the law and under this Supreme Court's clearly insane reading of our laws and constitution, there is nobody that can constrain the President.