I also was nerdsniped into trying this and found that after extracting the features array into a newline delimited json file, DuckDB finishes the example query

I also was nerdsniped into trying this and found that after extracting the features array into a newline delimited json file, DuckDB finishes the example query in 500 ms (M1 Mac), querying the 1.3 GB json file directly with read_json!