That makes sense. Emergency room triage happens really quickly in my experience (even if you walk in, usually less than 10 minutes). If it's clear your life is in serious danger, then even faster! Once they know your condition isn't life threatening, you get to wait until they have some free time to see you, however long that is.

Problem is most hospitals are setup to be overloaded aka "every day is a bad day" - god forbid you have some staff sitting around twiddling their thumbs! Better to just have just enough staff that the place doesn't fail.