What’s the situation where this is useful? Seems like ‘replace your remote duckDB instance—used to replace a DB server—with duckDB instance + a flight server (or a bunch of them!)’. Who has a problem for which this is the solution?
You can then directly use SQL to work with data from all those at the same time.
The working assumptions then becomes that SQL is a dialect that has a wider adoption then python for example...
Making an educated guess here.