It all comes down to how one defines "classic. "
It is a debate as old as TCM itself and it continues to this day.
When TCM first aired in 1994 movies from the 1940s were 50+ years.
Today, movies from the 1970s fit that criterion and the 1980s are not far behind.
Using "The Studio System" period is too restrictive for me. I welcome many of the classic films from the late 1960s and 1970s, (so long as they are uncut and uninterrupted.)
In 1994 Robert Osborne himself said that as the years pass, viewers should expect to see the inclusion of films from recent decades.
Go Flashdance, Fame, Footloose and Ferris Bueller!