In the D&D 4e Monster Manual (2008) "a monster's alignment is not rigid, and exceptions can exist to the general rule" (pg 7) so I'd say it rejects the idea of "always evil." Orcish behaviour in 4e may be due to environment and upbringing, as it is in Roger Moore's article in Dragon #62 (1982).4e? Alignment is rather less important/emphasized in 4e, but I don't think anything hints at humanoids who are other than evil.
As far as I'm aware, AD&D 1e and D&D 5e are exceptional in making orcish evil racial, inherent, inherited, and biological. Orcish personality traits are "natural tendencies" (pg 16) in the AD&D 1e DMG. The D&D 5e PHB uses very similar phrasing — "inborn tendencies", "innate tendencies." (pg 122) In 5e this is true of all the races that were created by evil deities, presumably similar to the listing of "savage and brutal" humanoids on pg 7 of the MM.