Serious plot flaw here.
As the episodes progress, we see Francis with different Sandmen hunting Logan. Now, I can buy Francis is a fanatic and has a vested interest (ruling the city as one of the elders) in bringing Logan back; but, I can't buy the fact that more and more people are leaving the city but are unchanged by what they are seeing outside.
Perhaps it's a flaw that could have led to an episode later, where the Sandmen start gossiping amongst themselves and the news spreads beyond, leading to conflict that the elders must stop. Heck, in a perfect world it could build across episodes until the elders are revealed to the populace (possibly by Logan or Jessica), which leads to outright revolt.
"Fortunately, Ah keep mah feathers numbered for just such an emergency!"