Thats very possible. The sturdiness issue stems from the body of the model being a lot thinner than older models(K'tinga class battlecruiser, refit Enterprise, Excelsior etc), and the variable geometry nacelles were a bit fragile. They had a nasty habit of folding the wrong direction!
I built a Voyager model about 10 years ago, but I don't remember the box looking like that. Maybe a different model company? I remember it not being as sturdy as the Enterprise D or the Romulan Warbird.
That's the box that I got. Maybe the international/export version was slightly different...?
Mine was a very sturdy model, second only to the runabout.