I don't think it was intentional. The red hair pics were from his Malice Mizer days, in the mid and late '90's, while the voice and costume stuff he did for Genesis in Crisis Core was during 2005. At least, I think so; I may not have my facts straight.

Mwa ha ha! Of course it will be my fault! But really, it's inevitable. Gackt and Hyde have so much in common, if you fangirl over one of them, you're likely to end up fangirling over the other as well. That's what happened to me while watching Moon Child for Gackt's sake.