Yup, and he said the first two were younger than that, hence no scars on them.
Well AVP isn’t canon, so Anderson’s sentiments are simply that.
Well, they are definitely separate licenses and subsequently separate revenue streams, but as of 2018's "The Predator", both Predator and AvP is one big continuity, which makes sense overall with the Xeno skull in Predator 2 to the Hawkins Grave in AvPR to the spear in The Predator.
Who knows how Disney's 20th Century Studios sees all this now, though.
A note of trivia though is the AvP films are considered "sequels" per the current lawsuit: