The AWS S3 SDK has undergone changes that break its compatibility with third-party services claiming S3 compatibility. Several comments express concern about relying on AWS SDKs for non-AWS services, pointing to potential risks associated with proprietary APIs not maintaining backward compatibility. Users suggest pinning SDK versions or switching to alternative libraries like aws4fetch for improved experiences. The emergence of options like OpenDAL is noted as a promising alternative. The discourse suggests a pressing need for third-party services to adapt quickly to AWS changes or face potential disruptions.