I know everyone and their dog has made a comic about Starscream asking to be choked harder but I think the thing EVERYONE is also sleeping on is that Megatron was NOT sitting there weirded out like 'damn bitch you live like this.' like. he very clearly, front-and-centredly, got a symbolic fusion cannon erection out of it

The Folded City

It's implied that Iacon is the only cybertronian city where the cybertronians live, and it is underground. But we also see those ruins that the four travelers find up on the surface, so what if there were other cities, the Quintessons destroyed them, and then Primus hid Iacon underground to protect its remaining citizens?

Also, what if the buildings that hang from the ceiling of the underground weren't always on the ceiling? What if Iacon used to be twice as wide, and then when the planet hid it, it folded it over so half of the buildings were now upside down like the stalactites of the cave it now inhabited?

Imagine that day: The inhabitants are minding their own business, and then suddenly half of the city begins to sink downward into the ground. At the same time, the other half slowly begins to tip to the side. Bots frantically rush into buildings to keep from falling to their doom as the streets shift, fliers grabbing the arms of their neighbors as they begin to slide down rapidly steepening slopes. Ceilings become the floor, floors become the ceiling, and the sub-levels of the buildings are the only thing grounding them into what is now the roof of a massive cavern.

Within just hours, perhaps even minutes, their entire city is underground, and half of its citizens are going to need help getting down...