The audible improvements from thorough record cleaning go well beyond the reduction of clicks and pops. Noise reduction is only the first benefit of cleaning, not the last.
As I've posted numerous times over the years, a completely clean record is (in a sufficiently revealing system) actually *slightly noisier* than a less clean one. Removing the last, thin layer of grunge allows a (sufficiently resolving) stylus to reproduce lower levels of detail, higher order harmonics and the subtlest micro-dynamics... and also any slight irregularities in the vinyl surface. In my system, these are the sonic indicators that a record is entirely free of contaminants and they (or their absence) are very audible.
These things (including irregularities that can cause a subtle groove rush) are masked in every uncleaned record I've ever heard. No record has ever failed to improve in these areas by being properly cleaned. Sometimes the improvement is so shocking that visitors barely believe it's the same record.
If one doesn't hear or care about these things then perhaps cleaning isn't necessary. But some of us can and do. Speaking only for myself, I didn't invest $25-30K in a vinyl front end to hear anything less than all of the music that's in the grooves. Both common sense and proven experience inform me that removing *everything* that could degrade the stylus-groove interface is essential to my enjoyment of the medium.