Maybe he had one.
But, it is true that Ikea is a one-show pony, in other words, much of their furniture is not suitable for people who intend to move around a lot. Their bookcases, entertainment units, etc aren't real great after a move or two. HOWEVER, the desk that is being referred to is a table top and legs. You buy them separate. Pick your top, color, legs, etc.
I've gone through my share of desks and frankly wound up with two table tops and 8 legs as my desk in my old place. Since moving I am down to one, but I will say quite frankly it is as stable as you can get at this point. Plus, moving is easy because you just unscrew the legs and you're set.
The top is made of manufactured wood-like material. It is hollow core, or paper, but paper may as well be hollow core. the metal brackets that the legs screw into are quite sturdy and the legs are also sturdy. The longer the desk the less stable it will be. This is the case in ANY table top. Think about it.
I did raise question myself to putting my 30" ACD and my Mac Pro on the top, but it came down to space and not fear of breakage.