More importantly, it is about whether our legal system should allow a king to set nationwide policy even when their orders conflict with the constitution.
A president getting to do literally everything he wants, whenever he wants, as fast as he wants, regardless of legality, is plainly less important than preventing the above from happening. What you are advocating for is a king.
The new limits allow a king-president to illegally harm people potentially indefinitely, until every single person, or at least each individual district, successfully individually files suit to stop him, or until a supreme court gets around to stopping him (years? decades?)
That's obviously way worse than some scary sounding bureaucratic metaphor like "legislative whiplash" which doesn't actually harm me at all. The concern about "legal uncertainty" is a joke compared to actually abusing people and sending them to a gulag without due process
> national issues are resolved by courts with the authority to decide them.
Every court has the authority to decide if an action is unconstitutional. The only thing that changed is that the executive is now free to continue that unconstitutional action until ~300 million people successfully challenge it in ~100 districts. Obviously that is worse, and more "chaotic" than pausing unconstitutional harm to people while the issue is resolved. Especially because it means ~100x more conflicting nationwide orders from different judges.