Persistently bad behavior can be anticipated and accounted for, random actions cannot. Importer have as much issue with the tariffs as they have with the unpredictability of those tariffs.
In theory, you try to limit the influence of a persistently bad actor, but it seems the U.S. didn't get the memo.
Why would it be worse?
If he knows, at least he has a plan, whether that plan is good or bad.
If he doesn’t know at all, then literally even more random shit can occur than what’s already happening.