Oh! You don't mean the loading screen (not much I can do) but the "welcome to custom home Mapper, etc etc" when you do the setup? Assuming you are mapping a new space... Yes I probably can implement a text skip. There is a skip for the "demonstration" mode (hit right thumb stick when it shows an example house around you) But why are you running through this phase often? Is your anchor not re-aligning things properly from last time?
Once you've got a saved setup, just put the controllers down in your anchors during the loading screen/progress bar. When game loads, it'll detect stillness right away, and do a quick load into your room (it usually should be loaded in before the "welcome back" message is finished displaying.) You don't need to do the "press right thumb stick, place down and wait for 5 seconds", you can sorta speed through it if it detects controllers in the right position at startup.
Make sense?