A/C compressor and crank pulley bolt

I have heard something from some mechanics but don't know if it is true or false. They say when you are driving on the highway and your A/C is on, the compressor keeps kicking in and out which puts a tremendous load on the serpentine belt and causes the crank pulley bolt to get tighter than the original torque you had applied to it and this makes it harder to loosen the bolt later. They say for example if you had tightened the bolt to 120 lb-ft, the next time you want to open it, it will be relatively tighter as if it has been tightened to 160 lb-ft (numbers are just examples for clarification).I know how A/C compressor works and it constantly kicks in and out during driving but can it really affect the tightness of crank pulley bolt?