I agree that DuckDB may sometimes be buggy because it's being actively developed with a large surface area (a universal embeddable query engine that works with different storage layers if I were to simplify).
However, DuckDB (non-profit foundation) != MotherDuck (VC funded). These are two separate organizations with different goals. I see DuckDB as a tool, not as a SaaS or a VC-funded company. My hope is that it'll be adopted by other projects and not associated with just a single for-profit company.