I like to use the bearings, but never considered this as another reason to do so. While all true, is the effect on the springs, and the application of force on the upper and lower platforms, significant enough to be concerned about? It's not like the springs are being run through such a large amount of movement relative to the travel available from free length to bind as valve springs are. A well sorted suspension has a relatively small amount of change to installed spring height during a run.

And of course, a jam nut or adjuster lock should be used to stop the adjuster from being turned by the force exerted on it.

If bearing kits on the shocks means this is one less issue to keep me awake at night, then I will add it to the list of benefits from using them.