It is not considered canon by the community and only those in the community who choose to believe that. Fox has never issued any statement regarding this issue. For me, just because the community says it isn't canon, that isn't good enough for me. My sources need to be a little higher than fan opinion. Some fans expunge certain Alien, Predator, and AVP movies from canon simply because they don't like it. I can't follow in these footsteps and say I'm a fan dedicated to the facts in the AVP universe.