If you check GE latest photos of that place you will see that it is a place where they are building big ship components. January 2015 they had a ship bow in there. They just covered part ot the place since then.
I dont see it having anything to do with military.
It isn't impossible for them to have shifted from building civilian ship components to military, so I wouldn't use google earth pictures from over half a year ago as a basis for my main argument.
Rather, I'd say that physically, the structure we see right now is completely dissimilar to anything like what we'd expect from a carrier when the structure is that big already.
More importantly, we haven't had any rumours or ground-taken-pictures of 002 being at a stage of construction at JN where such a structure would already be visible.
Not every single unidentified new hull or structure is a carrier... the only reason we were so confident about DL's hull being a carrier back when the first few modules appeared is because it looked right, but more importantly it was because of the substantial noise coming from the Chinese boards suggesting we finally were seeing 001A. There is nothing like that for JN's 002 as of yet.