Yeah that was a huge surprise for me; they showed a biological alien in this one!
So, I've just finished re-watching "the original trilogy" and it just impresses on me the little ways that TF4 went wrong. They're definitely not perfect, but all three are iconic classic popcorn movies that look gorgeous that I can watch over and over again.
BTW in the opening of TF1 Prime's narration says that they don't know who created the Allspark Cube but it gave them life. So that jives with these mysterious creators in TF4 that they don't know anything about. They created the Cube which the TFs came from.
I suppose Lockdown could have been fed a summarized story or maybe he was telling a summarized story, but he said "You think you were born? You were built." The movies never show the Allspark actually birthing any of the major characters, but it seems strange that the original Transformers such as the Fallen know all about the Allspark but never mentioned the Creators.
It makes perfect sense if none of the above know the
origin of the All-spark, as Prime implied in that same opening narration. And it's entirely possible that they know its purpose but not its origin if it was created in the time of the dinosaurs.
Here's how I see it: At one point in the ancient past the creators decided they wanted to mass produce autonomous robotic lifeforms. Why isn't important. The important thing is how. To mass produce a product you need raw materials, an assembly line and a factory to put them in. They created the raw material - living metal - by coming to Earth and killing the dinosaurs. Then they built the factory - Cybertron - and they built the assembly line - the All-spark - installed the assembly line in the factory and turned it on, whereupon it began producing copious numbers of autonomous robotic lifeforms.
The thing is, if the creators' reasons for doing all this don't include them actually interacting with their creations, the Cybertronians could go for millennia thinking the All-spark is the source of their existence. And without knowing their true purpose in the universe, they'd simply make up their own, so they either become champions - Autobots - or conquerors - Decepticons - and act accordingly.
What the latest movie implies is that the creators have finally woken up to the chaos being caused by what they consider their property and decided to take action. They created Lockdown - Unaffilated - to essentially "lock down" the troublemakers.