Basically, Shoji Kawamori made all Macross series and movies ambiguous. He stated that (I'm paraphrasing here) that none of the Macross features are canon (be it series, movies, novels, mangas, etc) Why? Because all of them are mere recreation of the "actual events". Basically like Hollywood's "based on true story" movies.
For example: you're familiar with the character Lyn Minmay from the first Macross, right? (She's the girl who charmed the Zentraedi alien-giants with her singing). In Kawamori's eyes, both Minmay from the first series and the DYRL movie are not the true Minmay. They're just recreations from the "actual Minmay character" out there in his imagination.
On one hand, it is very confusing because nothing is certain anymore. But on the other hand, it is somewhat liberating because nobody will have any problems with inconsistency from one series to another, or between series & movies, or between different medias. In short, all of the stories can be both right and wrong. Funky theory, right?
He's dedicated, I'll give him that. But too often he defends the parts of SEED that don't deserve defending. It could be the shittiest part of SEED and he'd still try and hold it up as something great when it's not.