There have been multiple “golden ages”. The last one I remember was when broadcast started trying to compete with cable. We got a slew of high production value and well acted shows like Lost, Desperate Housewives, Greys Anatomy, and Invasion around 2004/2005/2006.

Then the broadcast networks merged even further with streaming and cable conglomerates and became mostly a dumping ground for cheap reality programming and procedural spin offs.