Not everyone. I've followed electronic music for decades, and even in a paid-music store like Beatport, most artist reproduce what they've heard, and are often just a pale imitation because they have no idea of how to make something better. That's the fundamental struggle of most creatives, regardless of tool or instrument.

I haven't tried Suno, but I imagine it's doing something similar to modern software: start with a pre-made music kit and hit the "Randomize" button for the sequencer & arpeggiator. It just happens to be an "infinite" bundle kit.