This force being exerted while the suspension is cycling creates a radial load.
Best case scenario the rotation is isolated to the uniball, however under high impact loads even brand new joints can transmit that rotational load to the bolt, which will spin it loose and cause it to fail. A loose bolt is a broken bolt.
A majority of bolt failures are from poorly designed mounts, improperly torqued bolts (or ones that have loosend while driving), and undersized hardware.
These mounts solve a majority of the issues I've seen through the past 15 years being around the industry.