Not OP, but I'd guess there's greater industry awareness of relational DBs than there are of parquet files. I've been on the receiving end of a Parquet file that I didn't know how to crack open the ambiguity on how to proceed was frustrating.
Parquet is also usable in polars and pandas, and Apache Spark too but that’s getting into complicated territory.
DuckDB it’s literally just
Select * from ‘s3://bucket/*.parquet’