Brave and Vivaldi are corporate sellouts. They saved Manifest V2 but instantly deleted core engine features (WebSQL, FTP, JPEG-XL) the second Google dropped them to avoid technical debt. Supermium actually defies those engine deletions while maintaining modern zero-day CVE patches. As for CRW7, it's more of a hack. It resurrects dead zombie code (SwiftShader/DXVA) directly into the core rendering pipeline, causing massive merge conflicts that permanently destroy their security update speed. Supermium wins because it uses reverse engineered OS API shims (progwrp). By intercepting calls at the OS boundary instead of bloating the web engine, Supermium rebases and patches zero days infinitely faster than CRW7 ever will.
Oh a staged video defaming them was going on in Indian market it is sort of justifiable. It is one of the friendlier brands with sdcard jack support and is trying to work with graphene. Their g series are also only devices I would mess around with putting custom ROMs and keeping as secondary device