I think it's because it's one thing he can control all by himself. Look at all the attention he's receiving. The "will he/won't he" reality TV. Put a tweet saying X%. No, they won't be cancelled. Yes I'm suspending them for 90 days. And so on.
Except he can't. They're abusing a legal loophole that probably can be easily defeated in court if anyone interested can actually locate their balls to do it
I don't believe he can get a 7/2 ruling in SCOTUS. But I do believe he can get Republicans in the current Congress to jump for him, and to try to ensure their majority by disenfranchising people before the midterms.
I'm not saying he won't win the case but you're daft if you think it won't be 5-4 on the grounds that congress actually has to pass something to signal their intent to the courts.
The question here is not whether congress has to pass something, the question is can congress delegate this authority which is explicitly set by the constitution.
There were a bunch of sentences regarding non delegation of powers of congress, mainly for federal agencies, and courts deciding that congress can't delegate those faculties, so, by the book, this would be a similar situation. There is actually an ongoing case for this aspect of the discussion:
