Lebanon today, anyone who has been there recently, nobody does business other than in physical dollars, is this good or bad for the US?

In uruguay and argentina nobody wants to sell property that is not in physical doalr, is this bad for argentina/uruguay?

In practice, Venezuela is dollarized, nobody does relevant business that is not in physical dollars.

Will the USS ask to have all this wealth concentrated in dollars to end the physical dollar?

At the time of the Soviet Union, Eastern Europe only used physical dollars. The USA will be the last country that will really ban physical money because it benefits the most. The USS takes wealth from other countries that have inferior currencies that are concentrated in the dollar under the mattress.

The informal trade of the dollar is a market that sucks the wealth of other countries to finance the United States for free.