You miss the point, RC- The question is not bending or breaking the hub/drive washer, but unnecessarily nicking/marking/defacing the rim with plier marks. Perhaps you have heard the term "Plier Mechanics" or "Hammer Mechanics"? These terms derive from the usage, by those who know no better, of incorrect tools for the job, often resulting in damage or defacing of the parts worked upon.

Many of those who enjoy model aviation also take pride in craftsmanship and proper usage of tools. Obviously, however this is not now a prerequisite of the hobby.

Enjoy your hobby,

jess