Does restringing process wear/tare the racquet?

the fact is yes especially at high tension said 26Ibs and above.

 

Strictly speaking, there will be no adverse effect on a carbon graphite graphite from repeated stringing. I still string 25 year old Cab 20 racquets at very high tensions. However, it does often happen that the stringers might not be skilled enough and could be responsible for overstretching the frame to such an extent that the frame is weakened with micro tears, when mounting the frame. The racquet could also be repeatedly damaged from racquet clashes. The only thing that will come off like the colour of your jeans from repeated washings is the colour scheme of the racquet. The graphite frame and shaft will outlive a human being.

 

I would say that the pressure put on the frame by the tension will have an affect as long as the frame can withstand the tension.

 

Carbon graphite is very strong, much stronger than steel. The racquet frame is hollow and despite the very thin layer or thickness of the parts of the frame that come in contact with the string, it can withstand extreme tensions. It is more due to the abuse from stringers when stringing or from players clashing with other racquets that racquets break.
If a strung frame is of the same shape as the shape before it was strung, then any stress that distorts the frame is zero. A longer or shorter frame, as a result of stringing, will stress the frame.