WebKit Quirks.cpp

>>Bodaci+(OP)
This bit was interesting.

  bool Quirks::requiresUserGestureToPauseInPictureInPicture() const
  {
  #if ENABLE(VIDEO_PRESENTATION_MODE)
      // Facebook, Twitter, and Reddit will naively pause a <video> element that has scrolled out of the viewport,
      // regardless of whether that element is currently in PiP mode.
      // We should remove the quirk once <rdar://problem/67273166>, <rdar://problem/73369869>, and <rdar://problem/80645747> have been fixed.
      if (!needsQuirks())
          return false;

      if (!m_requiresUserGestureToPauseInPictureInPicture) {
          auto domain = RegistrableDomain(m_document->topDocument().url()).string();
          m_requiresUserGestureToPauseInPictureInPicture = domain == "facebook.com"_s || domain == "twitter.com"_s || domain == "reddit.com"_s;
      }
  
      return *m_requiresUserGestureToPauseInPictureInPicture;
  #else
      return false;
  #endif
  }

>>babelf+e8
The first rule of browser development is "forget the standard, forget consistency... If it's popular and works in other browsers but not yours, your browser is broken."

>>shadow+hk
Might as well create site-specific browsers.

>>matheu+Oz
It’s getting closer to the point where we call the entire current “web” a Google-specific network, Google Chrome is renamed a “Google” browser instead of a web browser, and we re-make a new interlinked network which does not require one specific company’s product to use. (Never mind an advertisement company.)

The “Google” network and sites can be kept on as a necessary evil proprietary service, like Facebook is for many, and also LinkedIn.

zlacker