Any moving part you can lock down will probably benefit from it.
A sweeping cloverleaf turn puts a giant crap load of force on the outside rv slide. Maybe hundreds of pounds, maybe one thousand... All pounding on that first aluminum(?) tooth while trying to simultaneously climb to level due to centrifugal force, pulling one rail off the other.
We know what an unlatched car door does on any sweeping turn at speed and some of us know the hundred pounds of force it takes to keep it attached to the car by hand when a latch fails.
Multiply that little car door by your giant slide.
Car doors are held by bearclaw latches, slides are held by teeth the size of watch-band links.
Keep your pinned.
You're exactly correct.
And
Stalling the slide motor when opening or closing allows the gear box at 188:1 or whichever you have to act as a brake and latch.
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