What ashley showed in that video, was not enough to justify the joke of "a full 3d engine in the works!". Since there are plugins that do 3d, and we had the 3d box object way back. Are those plugins a joke to them?
If he faked like a unreal 3d engine pasted over construct 3, the joke would make sense. In other words if it was over the top.
Joking about a feature that some of us would like to see (not a full fledged 3d engine, but maybe some 3d tools) i find a tad weird.
We have the z height, yet he did not claim he needed to implement a full 3d engine because of it.
If...it was a joke that is.