Here we go again - The Pakistanis are not really serious because they are not putting 300,000 to 400,000 troops into the fight.
Please try to avoid dogmatic declamations. The Pakistanis are "not serious" because their rhetoric does not match their commitment. To achieve what they say they are setting out to achieve would take considerably more troops than the 28,000 they have committed, of which only 11,000 (or thereabouts) are effectives. The Pakistani Army is 700,000-strong, and they have another 500,000 reserves to call upon. Given the huge task they have set themselves (nominally), their commitment is extremely modest. Further, by launching the operation so late in the season, it is almost certain that even the territorial objectives are unachievable. With the coming snows, ground operations will halt and the tribesmen will be able either to evade capture and disperse, or regroup and mount asymmetric attacks. For those reasons, the operation is seen to be "cosmetic".