I don't think it was supposed to. ...the glyphs are essentially what protect us from falling under the influence of whatever's out there in the Badlands.

...those of us that arrived without a glyph eventually started to lose it.

[It's a touchy subject, and the bits he remembers aren't the most pleasant.]

I'm sure that as soon as we think that, the next batch of arrivals will just throw us off again.