Chapter 2 of the Sword Coast Adventurer's Guide is narrated by five Faerûnians.
The introduction to Chapter 2: The Sword Coast and the North says (SCAG, p. 43; emphasis mine):
This chapter details many of the locales of the Sword Coast and the
North, as seen through the eyes and recollections of a person living
in Faerûn. Rather than being exhaustive descriptions, what follows are
snippets of information drawn from the experience of five individuals
who have traversed, lived in, and explored these areas. Like any other
narrators, they have opinions and biases, and may be drawing
conclusions from incomplete information. No one in the Realms knows
everything about any subject, even its oldest and most learned sages,
and the views formed from such incomplete information can often
suggest an inaccurate conclusion. This is not to say that any of the
information the narrators provide is false, only that they may not be
entirely knowledgeable in their declarations.
The "Lords' Alliance" section is narrated by (p. 43):
[...] Andwe Cururen, a half-elf native of Silverymoon who was once a
Knight in Silver (a member of the city’s army), and now serves as an
emissary and, when necessary, an active agent for the Lords’ Alliance.
The "Dwarfholds of the North" section is narrated by (p. 59):
[...] Drorn Waranvil, a longbeard (dwarf elder) who is a retired veteran
of the Iron Guard of Citadel Adbar and the Citadel Guards of Felbarr.
The "Island Kingdoms" section is narrated by (p. 66):
[...] Gardorra Burr, a gnome sailor who has spent most of her two hundred
years traversing the Sea of Swords.
The "Independent Realms" section (including the bit quoted in the question) is narrated by (p. 73):
[...] Aedyn Graymantle, a moon elf ranger who hails from Evereska.
The "Underdark" section is narrated by (p. 99):
[...] Oshgir, a half-orc warrior who was captured by a duergar raiding
party, sold to a Zhentarim agent, captured by drow, and then escaped
his captivity by killing an overseer and fleeing to Blingdenstone.