I think there are duds in all generations of music. I adore the American Songbook, but even within that time period there were plenty of inane songs as any other period.
Very few times in history are there such collaborations that make history compared to the number that tries. They say Lennon and McCarthy could literally write a song in half an hour. Same with Carole King. There are some equally talented writers today.
That being said, for me, there is some ridiculous music out there today. But I don't listen to it.
Current music that holds it own...Adele's song choice proves the appeal is more than a powerful voice...the songs/music is great.