Are you sure? He was the one who green-lighted Encrypted Media Extensions, the earlier, unfortunately successful attempt to shoehorn proprietary DRM blob into browsers.

DRM blobs were already in browsers, it's the only reason why Hollywood let streaming services have websites at all. First it was trojan-horsed through Flash Player and Silverlight, and then individual browsers all licensed or built their own solutions[0] to make "plugin-free" DRM happen.

The attitude of the W3C was basically "we either kiss the ring or Hollywood forks us". So I can totally imagine Tim Berners-Lee spinning in his nonexistent grave then too. That doesn't mean he's Stallman levels of freedom-or-death.

[0] AFAIK, Google bought Widevine, Apple uses FairPlay, and Mozilla originally used Adobe but now uses Chrome's Widevine library.