Not P but DFW: peephole

[Mike Jing]

The following excerpt is from David Foster Wallace's *Big Red Son *(from*
Consider the Lobster and Other Essays*), an article about the porn industry:

The best way to describe the sonic environment at the ’98 CES is: Imagine
that the apocalypse took the form of a cocktail party. Male fans move
through the fractal maze of booths in groups of three or more. Their
expressions tend to be those of junior-high boys at a peephole, an
expression that looks pretty surreal on a face with jowls and no hairline.
Some among them are video retailers; most are not. Most are just hard-core
fans, the industry’s breath and bread. A lot of them not only recognize but
seem to know the names, stage names, and curricula vitae of almost all the
female performers.

I assume the peephole here refers to the viewing hole of a erotic peep
show, is that correct?

Some editor changed it to a plain peephole, as on a door, which doesn't
make any sense to me. Is there anything special about the expression of
a junior-high boy standing outside a door as seen through a peephole? or
trying to look through one?