More US tax misery for Americans living abroad is to be found in a recent message of American Citizens Abroad (ACA). ACA is disappointed with the Moore vs. U.S. Ruling, read their message of 24 June.
ACA disagrees with the US tax regime imposing the repatriation/transition tax regime on US citizens living and working overseas. They comment that something still can be done to alleviate the concerns and issues of small US businesses overseas:

The U.S. Treasury should issue regulations to exempt businesses under a particular size. ACA testimony to the IRS in 2018 called for the application of a de minimis ruling which would remove these small businesses from the mandatory repatriation tax regime

ACA is advocating for Residence-based taxation (RBT) as the ultimate corrective measure to tax issues such as the one highlighted in the Moore case and many others affecting Americans that live abroad.