The rest was De Agostini not understanding (there's a shocker) what I was asking (if it was Legends canon) and they thought I was asking if the quote from the Fact Files was also Disney Canon, in which they then clarified how the re-release operates under the new Canon policy.
The part regarding the discussion here is the snippet I originally posted.
They're saying here that the quote is only accurate as of the time of the publication, which predates KotOR and SWTOR.
The re-release Fact Files apparently addresses those that came before, but they also make note that it's intended to be within the Canon continuity.
Even with the re-release, it doesn't apply to future characters and intentionally neglects those that the audience wouldn't be familiar with.