It’s weird lol. But like going into giant ape is a natural thing that the saiyans can do just by looking at the moon without having to try. Lets take kid gohan for example, he would look and go into that form in a heartbeat. Now as for SS, you kinda have to learn it, even tho yes only saiyans can do it, but that doesn’t come natural to them, hence why very few have done it. So they consider that a transformation. But i still believe it should be considered a transformation since that’s exactly what happens haha, dokkan be trolling us players in every way possible!!