​It's not silly, it's just proposing a different workflow. One of the cool things about Cadence (for me at least) you can easily set it up to start jack by default when you login -- you don't have to open anything in the next login, not even Cadence itself. Thanks to the available bridges (which also can auto-start), you can also have a2jmidi and pulseaudio jack sink starting and running automatically.

In short, it is one *less* application to open -- I simply no longer need QJackCtl in most cases. And whenever I need to connect something manually, *then* I open Catia, the simple interface that is there just to for that purpose.

This set-up is particularly useful when I'm dealing with a group of ten or more students in a class or workshop, with 99% of people trying Linux for the first time. It is so much easier to be able to go straight to SuperCollider or Ardour or Hydrogen, bypassing completely any initial set up or talk about Jack -- especially when time is so short. Later, when more complex routing needs arise, that's often the best time to introduce the talk about Jack.

My 2 cents,

Bruno