No, I would agree that the fires that are visible in that shot look very robust.
But with the exception of the one on the corner (in sheeples' image) which is exuding a thick black smoke cloud, you can see the rest of the visible fire has much less smoke issuing from it. It's the floors where we don't see flames that are issuing the most smoke.
When skeptics talk about the towers being mostly smoking rather than flaming they are referring to how the towers appeared generally over the course of time that they burned:
[qimg]http://willyloman.files.wordpress.com/2011/12/twin-towers-hit.jpg[/qimg]
[qimg]http://dalje.com/slike/slike_3/r1/g2011/m09/ox281275742680822416.jpg[/qimg]
[qimg]http://img.thesun.co.uk/multimedia/archive/00372/twin-towers-burning_372982a.jpg[/qimg]
The burning was never seen to engulf an entire floor at once. And comparing this to other building fires, these were not infernos.