I don't have any answers - sorry if seeing a reply got your hopes up!
Just saying it did occur to me that maybe if one enabled the option to 'use shortcuts in place of quick screen' and then created a shortcut that didn't do anything, or did something harmless, that might be a workaround. However haven't managed to get that idea to work myself, it still seems to go to the quickscreen. Don't know if anyone more expert might know if that could be made to work?
Otherwise, from what you say in your other post about this, it sounds as if this is sort of an 'usability issue' for someone vision-impaired, so maybe there's therefore an argument for having a settings option to disable the quick menu entirely? That could be added to the existing option for choosing between having the quickscreen or shortcuts, maybe? Not that I have the ability to add that feature myself, unfortunately.