It was about how mainstream technology today focuses on web-based stuff, data harvesting, mobile phones (and how they are way more locked down than your typical desktop computer - even when taking Windows into account), complexity of all these things, etc and desktop computers have fallen to the wayside (ironically everything mentioned is power by Linux).
FWIW i think desktop peaked around Windows 2000 and on Linux around GNOME 2 and KDE 3.5, since then everything has becoming progressively worse. But -IMO- that is a consequence of the lack of focus on the desktop in general.