You are very correct and have apparently bought in to the traditional misquoting of Holmes' statement. Read it again....emphasis added.....
"falsely shouting fire in a crowded theater"
Falsely shouting fire in a crowded theatre, dismisses any responsibility that the ausience may have in determining if haste is needed. Is there smoke? Is there fire? Is the man shouting an idiot? No one need worry when sizing up one’s immediate situation is done with logic and reason