Simply put, this is law breaking. The President-elect is making promises to break the law day one. This is not surprising.
> With respect to a foreign adversary controlled application, the President may grant a 1-time extension of not more than 90 days with respect to the date on which this subsection would otherwise apply to such application pursuant to paragraph (2), if the President certifies to Congress that, […]
where “would otherwise apply” is pretty clearly not predicated on the preceding section having come into effect or not.
>the President may grant a 1-time extension of not more than 90 days with respect to the date on which this subsection would otherwise apply to such application pursuant to paragraph (2), if the President certifies to Congress that-- (A) a path to executing a qualified divestiture has been identified with respect to such application;
>(B) evidence of significant progress toward executing such qualified divestiture has been produced with respect to such application; and
>(C) there are in place the relevant binding legal agreements to enable execution of such qualified divestiture during the period of such extension.
It seems highly unlikely any of those criteria are being. Trump is not even suggesting it, never mind providing receipts.
(A very common example: many people in the US can walk into a store and buy marijuana without fear of prosecution because the last several presidents -- from both parties -- have chosen not to enforce that particular federal law.)
Certainly the courts can (and sometimes do) get involved, but the only thing that can force the executive branch to act is for the House to impeach the president, and for the Senate to convict. And the House is not going to impeach Trump over this, or pretty much anything.
Biden wasn't considered to have broken the law when courts threw out his plan to forgive school debt. The president tried something, the courts found the order to be invalid as the rule didn't fit the current laws, and everyone moved on about their business without claiming the president broke the law or implying he should have been charged.