Here's a commentary that has been written on this subject:
current.org
One of the points was that most of the classic operas deal with subjects that most people would consider indecent. So to drop current operas because they deal with indecent subjects ignores all of the incest and sex that exists in the 17th century operas.
Why a classical station should reconsider dropping The Met’s contemporary operas
"Reading your letter initially inspired a rage ... that was so intense I had to wait a couple of days before I sat down to write a response."
One of the points was that most of the classic operas deal with subjects that most people would consider indecent. So to drop current operas because they deal with indecent subjects ignores all of the incest and sex that exists in the 17th century operas.