OK, do sport, macro, wildlife, photojornalism,real estate , indoor events, stage ....with an Holga and see how many offers to buy your photos you get.
But that's beside the point, Franco. Forgive me, I'm not familiar with your work, but let's work from the perspective that you are fantastic photographer who makes compelling images. Are you saying you would be unable to do that with a Holga?
If you were (unable), doesn't that mean the quality of your photography is based solely on your ability to zoom, choose a focus point, and maybe set exposure, as opposed to your ability to see a scene that would make a compelling photo and arrange the elements in the viewfinder to make it moreso?
Aaron