People with longer feet have wider boots, 4mm per shell size in any given boot model. Therefore, they should boot-out more.
A person in a 26 shell in a 100 last is skiing a narrower boot than a person in a 28 with a 95mm last.
So, actually, the "wider" shorter boot will be better in that regard.
So, do short-footed/smaller people get to have higher edge angles, or at least fewer boot-outs than taller/longer-footed people?