How do YT download tools "break" YT's DRM any more than your browser "breaks" YT's DRM? Both devices are user-agents, and allow a user to decode and view conten

How do YT download tools "break" YT's DRM any more than your browser "breaks" YT's DRM? Both devices are user-agents, and allow a user to decode and view content. Once that content gets sent to your monitor it is no longer encrypted, thus no different from any other video signal.