Surprise!
I thought they were on Earth and Cybertron was pulling parts of earth up lol

Wow that really did not pass well as Cybertron lol

 

If you go back and look at the scenery on Cybertron surrounding the ignition chamber as Cybertron approaches earth, you can see the green vegetation shortly before Quintessa turns Optimus into Nemesis. I think you can even seen it in the background as Optimus enters the ignition chamber early in the film.

I don't like it. As I said in a thread recently, I like to imagine Cybertron a mostly mettalic planet. The final battle did not feel like they were on Cybertron except when they were actually in the ignition chamber.

 

It doesn't bother me since it looks like its made to keep everything intact like a glue.