In Alteryx Designer application, in User Settings, please add an option for us to check/uncheck whether we would like to show/hide the Splash Screen upon app launch.
I asked about this a very long time ago & the response I got back was that it wasn't going to happen. I feeling I got back then was that it was a branding/advertising thing, they wanted the logo to show on the screen during the load period, it's by design.