You've ignored my point that weight alone does not determine how easy or difficult it is to carry or maneuver a folding bike while on foot. The size/shape/weight distribution/method of carrying while folded are not to be overlooked.
This sounds like apologetics to me.
Sure, the torque involved in lifting a bike, and its unwieldiness, are all interesting issues. But at some point this becomes an excuse for a poorly designed bike. The Mobiky, notionally "aluminum", is
thirty pounds before you even begin to add gizmos. I have hefted one before at College Park Bicycles. It is
heavy. And not particularly convenient to carry about in the many situations where you can't roll it. For a bike in the (and I mean this with love) clown bike category, this is totally unacceptable.
This thread started with someone asking about 15 pound bikes: weight mattered to them. Folded rolling is not everything if you have (for example) three flights of stairs to walk. And this thread is now devolving into suggestions that they get just about the heaviest folding bike on the market (that I am aware of -- maybe a Montague is heavier, I dunno). I say they've not been well served.