Not unless you drive with your foot on the clutch pedal. Under normal driving conditions the thrust bearing is not in motion.
Don't hold the car in gear at junctions or lights - take it out of gear and don't 'shoe' the clutch (resting foot on pedal when not changing gear). Multis are prone to wearing the 'fingers' of the pressure plate and noisy thrust bearings by this practice!
The noise is probably within the box rather than the thrust bearing for the reason above. As said above - check gear oil and use synthetic.