I'm sure it will make spinning the preload ring easier when new and clean/lubed, but after its packed with dirt I doubt it. The threads on the shock body/ring are also important. IMO, gimmick. Just clean the shock good, WD40, and it spins easy enough with the weight off the wheel. Once the preload is set to your liking you don't touch it anyway, just take an exact measurement and reset it there for the next time you have the shock out for service.
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