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This is fairly common for music creation apps which have a lot of knobs, and it makes sense because a knob doesn’t work so well with a mouse as dragging up and down. It’s not immediately obvious though

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But wouldn't it make more sense to not have rotary knobs since they are so confusing with a point and click interface?

Not if you work with both physical and virtual hardware.

Looking at a physical control board, you can see at a glance where a group of knobs are positioned. Being able to then glance at a screen and get similar information instantly is important for workflow.

For most DAWs the primary control surface is usually a physical MIDI device that has real physical rotary encoders, which you would map to the virtual rotaries on the pretty interface. So it's more intuitive to have both be a rotary.

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