I have ~40 demoes from a music career that never took off. Now I am feeding little Suno with this demoes, turning them into afrobeat with oboe, deep house with harmonica, etc, and reliving the creative joy.

You can make a decent demo in a DAW and run it through AI for a nice production. The art of writing songs is still equally hard IMO. And a good song is still good, no matter what costume it wears.