They employ several of the main developers of community PostgreSQL and also sell commercial versions of the database. Why does that make this article suspiciou

They employ several of the main developers of community PostgreSQL and also sell commercial versions of the database. Why does that make this article suspicious? Obviously they stand to benefit from more people using PostgreSQL, but they've been exceedingly clear with their methodology - their benchmark is available on Github: https://github.com/EnterpriseDB/pg_nosql_benchmark https://github.com/EnterpriseDB/pg_nosql_benchmark.